SKU: 58268772684

PRO-TECH PLUNGE CUTTING BALL 1/2' X 1/2' 1/4'SHANK KP216021

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Description

PRO-TECH PLUNGE CUTTING BALL 1/2' X 1/2' 1/4'SHANK KP216021Ball cutting router bit Carbide Tipped Cut channels for pipes or cables using the ball end bit. The profile requires the cut to be made in a single pass. To reduce stress on the bit, cut an initial groove using a straight bit matching the diameter dimension of the ball end bit. Cut channels for pipes or cables using this ball end bit. Uses include: 2 Flute Industrial quality Carbide tipped To reduce stress on the bit, cut an initial groove using a

Ball cutting router bit

Carbide Tipped

Cut channels for pipes or cables using the ball end bit. The profile requires the cut to be made in a single pass. To reduce stress on the bit, cut an initial groove using a straight bit matching the diameter dimension of the ball end bit. Cut channels for pipes or cables using this ball end bit.

Uses include:

  • 2-Flute
  • Industrial quality
  •  Carbide tipped

 

To reduce stress on the bit, cut an initial groove using a straight bit matching the width dimension of the ball end bit. Profile is used as a conduit for cables and pipes. Note: The profile requires the cut to be made in a single pass.

 

This router bit has a 6,35 mm shank (shaft) that will fit most small routers. Please ensure that you select a router bit with a shank (shaft) size that will fit into your router collet.

 

PRO-TECH router bits are manufactured in Taiwan.

 

consider safety for your health and the people around you

General safety suggestions:

It is advisable to always have the following items nearby and in a good condition

  • Eye protection clean and scratch free
  • Hearing protection quality earmuffs
  • Dust masks discard old and dirty masks
  • Gloves for easy handling of material and hand protection
Wear Gloves
Eye Protection
Hearing Protection
Dust Mask

To use router bits safely (and to get the best results from your router), the router bits need to be installed properly into the router's collet. Improper installation of your bits can cause excessive chatter and could increase the likelihood that the bits will break when in use. 

Clean and sharp

First of all, before beginning any routing operation, check your bits to make sure that they are clean, relatively free of pitch, and most of all, sharp. If the bit is dull, chipped, is excessively burned or has any other defect, it should be sharpened or replaced before use. 

Correct collet and collet nut fit

Most router collets have a recess (groove) that needs to click into a circlip that resides inside the collet nut. Failing to ensure that the collet 'clicked' into the collet nut will cause you to struggle to remove the router bit after tightening. This could cause the collet to break or be removed by a technical repair centre.

 

Correct fit inside the collet

When installing the bit into the collet, do not tighten the collet with the bit 'seated.' Instead, insert the bit until the shank (bit shaft) reaches the bottom of the collet, then ease it out about 2 mm before tightening the collet.

When the bit is tightened, there should be no less than  2/3 's of the length of the shank in the collet. If your bit has a shank that is too short, then the bit should be replaced. 

 

Safety gear

There are a few other safety measures to keep in mind whenever you use your router. First of all, remember to always wear appropriate safety gear as indicated above.

Correct speed setting

Second, be sure to set your router to the proper speed for your router bit. Setting your router to an incorrect speed will not only affect the router's performance, but also can cause the bit to break much more easily and even cause bodily harm. The speed at which a router bit turns can be important. The typical router runs at about 22,000 rpm, which is fine for most bits. But as the diameter of the bit increases, you ll want to slow things down.

Also, before beginning any routing operation, be certain that you give the router's motor time to come up to full speed for the chosen setting. Beginning to cut before the bit is at full speed can give less than desired results. 

Observe the following at all times

  • Wear a protective face shield or Safety Glasses to prevent eye and face injury.
  • Wear ear plugs or ear muffs to protect your hearing.
  • Use a respirator or dust mask to give protection from dust particles. Wood dust may remain in the air for hours after using power tools.
  • Always read and follow router operator's manual instructions.
  • Make sure that router rpm's and the bit selected match.
  • Dress properly. Wear short sleeves, no loose fitting clothes, proper footwear and no jewellery. Tie back long hair.
  • Always be sure the router is unplugged before replacing bits and that the switch is off before connecting the router.
  • Be sure the router bit has completing stopped spinning before sitting the router down.
  • Be sure bits, clamps and attachments are secure before starting up.
  • Keep children, pets and visitors at a safe distance.
  • Be especially cautious when working small pieces.
  • Keep hands and fingers away from revolving bits and cutters.
  • Do not operate routers in moist or wet areas.
  • Always grip tool tightly and be prepared at start-up to resist the motor torque.
  • When using a router table, make sure on/off switch is easily accessible.
  • Learn the sound of your router and shut it off at any unfamiliar sounds or irregularities.
    Never start the router with the bit in contact with the material.
  • Always feed in the proper direction, against the direction of bit rotation.
  • Maintain equipment. Replace worn parts, discard worn-out bits and check router periodically. Clean parts with appropriate solvents.
  • Don't operate a tool if you are tired or under the influence of medication, drugs, alcohol or while smoking.
  • Check wood for nails, screws or loose knots before routing.
  • Keep your mind on your work, avoid distractions, work at a comfortable pace and stop before you get tired.

Do a dry run

  • Place the router on the final work surface and test you cut by moving the router over the whole are to cut with THE ROUTER SWITCHED OFF
  • You do not want to waste an expensive piece of wood
  • You do not want to start all over
  • Never met anyone with spare fingers - SAFETY
Part No. Shank dia. Cutting width Cutting Height Radius
KP216021 1/4 inch 1/2 inch 1/2 inch used according
to width
6.35 mm 12.70 mm 12.70 mm

 

Length of Shank: 32 mm

 

 



KP216021Router Bits > Plunge Cutting Grooving Bits > Plunge Ball
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 58268772684

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Taylor Ashley
Grantham, US
★★★★★ 5
Holy Grail of Moisturizers
Style: Restorative Protective Cream-3.3 Fl Oz
I bought this after hearing a dermatologist on Instagram rave about this cream and now I see why. As someone who suffers from pretty severe eczema this is my go to holy grail for flair ups. Perfect for sensitive skin and can be used daily. It is very thick so provides a thick layer of moisture on your skin. I will say I have bought 2 sizes in this and the smaller size (1.3fl oz) did separate and had a liquid part that would come out. I have bought numerous tubes of the larger size (3.3fl oz) and never had an issue with separation with the larger size. I’m learning as I get older that more expensive does not mean better quality skincare. This is one that is not only affordable, but will also give you noticeable results. I have everyone in my whole family using this product!
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Reviewed in the United States on May 17, 2026
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Elizabeth Browning
Massapequa, US
★★★★★ 5
I Just Want to Help People With Skin Problems!
Style: Tolerance Control Soothing Skin Recovery Cream
I so wish I had known about this skincare line a long time ago, but just glad I did find it at all. I have rosacea (including ocular rosacea) diagnosed by a dermatologist. I had been through all the typical stores and websites, trying so many things over the last 15 years. Yes, most were supposed to be for people with skin problems. EVERY SINGLE TIME I tried something, within five minutes, my skin was bright red. My skin reacted to EVERYTHING. I started to believe there was not one single product on the entire planet that my skin would not react to! It was so frustrating. Purchase, fail, repeat. Thing is, I had tried their spring water spray. I sort of ignored all the other products until I was talking to someone randomly and they asked if I had tried Avene. Honestly I decided maybe this was providence and that I had better try it just to be on the safe side. What would life be like if I had ignored their advice and not tried it? If this company ever goes out of business, I will have to live with terrible skin because I already know there is nothing else out there. I had read a review whereby someone said their doctor told them the longer they used the products, the better their skin would get. This is completely true. But even initially, all I cared was that I could relieve the dryness with SOMETHING that did not turn my skin RED IMMEDIATELY! Even THAT, I would have been happy with! Now for the rest of the benefits. I had the good intuition to purchase two of these when they were on sale. I am so glad I did. I use it like crazy every chance I get. It just feels so good going on and I like touching my skin even after the product dissipates. No redness, no irritation, it actually CALMS my skin. And makes it like, well, "real skin." I'm glad I also got the thicker version in the tube, Cicalfate. This is my go-to for dryer areas and in the winter. The two together along with the water spray, if you like to use something like that, are a great overall program. Definitely other things I would like to try. Again, my goal was to help others who have skin problems because everything else out there has no concept whatsoever of calming the skin, but the exact opposite -- irritating it worse (even if those products are supposed to help with redness or irritation). And I felt the company truly deserves a shout-out because they GET IT when it comes to skincare products. Whatever they've done, they are experts, far more than all the other skincare lines and I don't care how long those have been around. If it doesn't immediately tell you your skin "likes it" and shows it by not reacting or immediately getting better, why on earth would you pay your hard-earned money to buy it and keep using it? It's worth every penny, don't bat an eyelash, your skin is worth that and more. If it's on sale, get a lot of it because trust me, you are going to want and need it. You will be so glad you got more than one. I definitely am! THANK YOU, AVENE, WE LOVE YOU HERE IN AMERICA! YOU UNDERSTAND SKINCARE LIKE NO OTHER COMPANY! Update: Wanted to comment that I'm still so grateful for a product that does FAR MORE than what you expect! I recently bought more. I watch my skin calm down the minute I put it on. I don't know entirely how the ingredients do what they do, but to the company ... please don't fix what isn't broken! Too many companies have a good thing and then change it. Please don't, the products are perfect and far beyond expectation! I also wanted to mention it seems the Tolerance tube will get EVERY LAST BIT out, you won't be wondering if there is anything left you are discarding. The Cicalfate tube is a bit different, it's more like a squeeze tube. But I feel I can still get the product out to use it all. That said, you get your money's worth. I'm also starting to use the Cicalfate on my hands in the winter, too (which are sadly starting to show my age). But this product line has literally CHANGED MY LIFE! BUY IT, it's the REAL DEAL!
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Reviewed in the United States on August 10, 2025
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Jeanie
Fort Morgan, US
★★★★★ 5
Love this cream
Style: Tolerance Control Soothing Skin Recovery Cream
I absolutely love the Avène Tolerance Control Soothing Skin Recovery Cream — it’s become a sanctuary for my sensitive skin. From the very first application, I noticed how calming and gentle it feels. The texture is rich yet lightweight, absorbing beautifully without any greasiness. This cream has been a game‑changer for days when my skin feels irritated, reactive, or overwhelmed. It instantly soothes redness and discomfort, and over time my skin feels stronger, more balanced, and resilient. What really stands out is how comfortable and nourished my skin feels all day long — no tightness, no irritation, just pure relief.
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Reviewed in the United States on February 26, 2026
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Tiffany
Waukegan, US
★★★★★ 5
Must have for rosacea sensitive skin!
Style: Tolerance Control Soothing Skin Recovery Cream
I have fair, sensitive skin & since being in peri-menopause I suddenly have rosacea. This cream is SO gentle on the skin but so instantly calming. It hydrates so well & a little goes a long way. I will be buying this over & over from now on!
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Reviewed in the United States on April 15, 2026
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Amazon Customer
Louisville, US
★★★★★ 5
Great for Sensitive Skin
Style: Tolerance Control Soothing Skin Recovery Cream
I have very sensitive skin and have tried everything to try and prevent rosacea flairs. I recently came across this brand and I absolutely love this recover cream. I consider this now the holy Grail for Rosacea and sensitive skin. It makes my skin feel hydrated and non-reactive. It is soothing and I just cannot get enough of it. It is pricy but it is worth it to not have my face constantly feeling like its burning or irritated.
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Reviewed in the United States on April 2, 2026

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