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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
Milwaukee SDS MAX 1/2" 4-Cutter Rotary Hammer Drill BitsFeatures Breaker points for up to 20% faster drilling speeds Rebar guards for increased DuraGuard in hard aggregate and rebar Variable flutes for up to 15% more holes per battery charge Reinforced flutes to avoid bit breakage Wide flute entrance for increased faster dust removal Wear mark indicators to indicate end of life Centering tip of exact spot drilling ANSI specified to fit common anchors Specifications Bit Diameter: 1 2" Bit Material: Carbide
Features
- Breaker points for up to 20% faster drilling speeds
- Rebar guards for increased DuraGuard in hard aggregate and rebar
- Variable flutes for up to 15% more holes per battery charge
- Reinforced flutes to avoid bit breakage
- Wide flute entrance for increased faster dust removal
- Wear mark indicators to indicate end of life
- Centering tip of exact spot drilling
- ANSI specified to fit common anchors
Specifications
- Bit Diameter: 1/2"
- Bit Material: Carbide Tipped
- Case Included: No
- Chuck Fitment: SDS-Max
- Shank Style: SDS-Max
- Bit Type: Percussion
- Flute Length (in): 4.5
- Length: 21.0 Inches
- Package Contents: (1) SDSMAX 2CT 1/2"X15-1/2" X 21" (48-20-3904)
- Recommended Safety Equipment: Safety Glasses
- Shank Diameter (in): 0.5
- Color Coded: No
- Etched / Stamped Size Identification: No
- Single / Double Ended: Single
- Drilling Depth (in): 15.5
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Nice unit
Using this for deterring my hot rod being stolen. Good price for this. Installation was no surprises and just let them try to steal my hot rod now. First one that was ordered arrived damaged, went through the process of getting a replacement which was simple and received the replacement in a couple of days.
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Reviewed in the United States on September 20, 2024
★★★★★ 3
Does what it does
Does what it does
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Reviewed in the United States on November 10, 2025
★★★★★ 1
Failed after 2 months
Failed after about 2 months of being used as a battery isolator. When activated, only passes about 2 volts though the contacts on a 12 volt circuit now. Wasted my time and money.
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Reviewed in the United States on August 26, 2025
★★★★★ 4
Works great
I used this to turn on with key on power in my truck. Power then goes through this and turns on my key on fuse panel. That way I can run a much larger cable from the battery to the fuse panel instead of pulling power through the ignition switch, where power output is limited. So far it doesn't get hot, though I am not running anything close to 500 amps through it. More like 75 amps max and even then it's only sometimes. No problems so far.
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Reviewed in the United States on July 28, 2024
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
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Reviewed in the United States on March 24, 2025