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Description
RAM X-Grip Universal Smartphone Cradle - Tough Ball BaseRAM HOL UN7B A 379 M616U RAM X Grip Phone Mount with M6 Tough Ball Base (Short Arm) The RAM HOL UN7B A 379 M616U pairs the RAM X Grip universal phone cradle with a RAM Tough Ball on an M6 threaded post and a short alloy double socket arm. The M6 male thread lets you turn a suitable existing bolt hole into a 1" ball mounting point, ready to take the X Grip. Key Features Spring loaded 'X' design with rubber caps grips the phone firmly without covering
RAM-HOL-UN7B-A-379-M616U – RAM® X-Grip® Phone Mount with M6 Tough-Ball™ Base (Short Arm)
The RAM-HOL-UN7B-A-379-M616U pairs the RAM® X-Grip® universal phone cradle with a RAM® Tough-Ball™ on an M6 threaded post and a short alloy double socket arm. The M6 male thread lets you turn a suitable existing bolt hole into a 1" ball mounting point, ready to take the X-Grip.
Key Features
- Spring-loaded 'X' design with rubber caps grips the phone firmly without covering the screen, camera, or buttons
- Tough-Ball™ base with an M6-1 x 6mm male threaded post connects to a variety of threaded points
- Short alloy double socket arm; ball-and-socket design allows near-infinite positioning
- Includes an optional device tether for extra security during rugged use
- Powder-coated marine-grade aluminium, stainless steel hardware, and high-strength composite; backed by a lifetime warranty
What's Included
- RAP-B-379U-M616 1" Tough-Ball™ with M6-1 x 6mm male threaded post
- RAM-B-201U-A short double socket arm
- RAM-HOL-UN7BU X-Grip® universal phone cradle with device tether
Dimensions & Specifications
- Thread: M6 x 1, 6mm length
- Arm overall length: 60.5mm (2.38"); socket-to-socket 51mm (2")
- Cradle minimum device width 47.6mm (1.875"), which needs a minimum height of 108mm (4.25")
- Cradle maximum device width 82.6mm (3.25"), which needs a minimum height of 57.2mm (2.25")
- Cradle maximum device thickness: 22.2mm (0.875")
- Ball size: B size, 1" rubber ball
- Load capacity: 907g (2 lb) standard use; 454g (1 lb) heavy-duty use
- Weight: 213g (0.47 lb)
- Materials: powder-coated marine-grade aluminium, stainless steel, high-strength composite
Compatible Devices
The X-Grip cradle fits hand-held devices within the width and thickness ranges above. Always measure your device with any case, sleeve, or skin fitted before ordering. For the full list of compatible models across 14 major brands, see our RAM-HOL-UN7BU cradle listing.
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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
4.2 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Who can live without slime great stuff and a good price. 👍
Style: 32 oz
If anyone has an outdoor anything that takes air. You should never be caught without this stuff. It seals your tires on almost anything and it lasts longer than you would expect. It’s easy to use and easy to clean up after using it. It will work well for anything that is supposed to hold air. Great product.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Title: Reliable, Easy-to-Use, and Worth Every Penny
Style: 32 oz
I’ve been using Slime tire sealant for my fat tire e-bike, and I can say with confidence that this product delivers exactly what it promises. The application is simple, the results are consistent, and the peace of mind it provides is invaluable. For anyone who rides regularly — whether for commuting, recreation, or deliveries — this is a product that pays for itself many times over.
The first thing I appreciate about Slime is how easy it is to install. The bottle is well-designed, the instructions are clear, and the process takes just a few minutes. You simply deflate the tire, remove the valve core, squeeze in the recommended amount, reinstall the valve core, inflate, and spin the wheel to distribute the sealant evenly. No special tools, no mess, and no guesswork — just a straightforward, user-friendly process.
Performance-wise, Slime does exactly what it’s supposed to do: seal punctures quickly and effectively. I’ve had nails, thorns, and sharp debris puncture my tires while riding, and in every case where the leak was within the tread area, Slime sealed it instantly. There’s something incredibly reassuring about hearing that faint hiss of air for a second, then watching it stop as the sealant does its job. It’s a real-time reminder that this product is actively protecting you from being stranded.
What sets Slime apart from other sealants I’ve tried is its durability. Once applied, it stays active inside the tube for months, ready to respond to new punctures as they happen. It doesn’t dry out quickly, it doesn’t clump up, and it doesn’t cause balance issues with the tires. For someone who rides almost daily, that reliability is a huge plus.
Another thing I respect about this product is that it’s non-toxic and environmentally friendly. If a bit of sealant escapes during a repair, I don’t have to worry about it harming the environment. It’s also water-soluble, making cleanup easy if I ever need to replace a tube or tire. That attention to safety and sustainability shows that the company isn’t just making a great product — they’re doing it responsibly.
The value for the price is excellent. One bottle goes a long way, and when you factor in the cost of replacing tubes, paying for roadside repairs, or even the inconvenience of being late because of a flat, Slime is an investment in both savings and peace of mind. For delivery riders like me, it’s especially valuable — every flat avoided means another day of work uninterrupted.
In short, Slime is one of those rare products that I can recommend without hesitation. It’s easy to use, effective, long-lasting, and backed by a company that clearly understands the needs of cyclists and e-bike riders. It has already saved me from countless headaches, and I plan to keep a bottle on hand at all times. If you ride regularly and haven’t tried it yet, you’re taking an unnecessary risk — this is one of the best preventative tools you can add to your maintenance kit.
Verdict: Five stars for performance, ease of use, and overall value. Slime is a must-have for any serious rider who values reliability and wants to keep rolling no matter what’s on the road.
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Reviewed in the United States on August 11, 2025
★★★★★ 4
Slime is good, pump is a disaster
Style: 1 gal, Style: 1 gal
The only reason I am giving this a 4 star(not zero) rating is the slime itself. The actual pump on the 1 gallon canister is awful. It makes so much mess, so I do not know whether I pumped the slime into the tubes or it all just spilled out of the base of the pump. The bottles worked great, but this time I needed to use more slime for a bunch of tires. What a slimy mess that was. Very poor pump design. Only after I spilled who knows how much of the slime, I finally washed it and was able to see the problem. The cap at the base of the pump got unscrewed and let all the slime lose. I screwed it back up and this should fix the mess next time I use it. Just a heads if someone encounters the same issue.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Great product
Style: 16 oz
Worked as advertised. I would order again.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Fixes flats and old tires like a charm
Style: 1 gal
This stuff is awesome. If you have tractor tires, ATV tires, bike, tires, hell, any tires that hold air. This stuff is awesome. Awesome. Awesome. It does not work for highway vehicles, i.e. Cars and truck trucks. But anything else it’s great. Dollies, air compressors, wheelbarrows, the stuff is awesome dude.
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Reviewed in the United States on April 5, 2026