Marrkey 12mm Carbide Screw Tire Studs Snow Spikes Anti-Slip/Anti-ice for Car/Snowmobile/Tractor/ATV/UTV/Motorcycle/Short Lug/Bicycles/Shoes with Installation Tool - Pack of 100

I like the strong magnet in the installation tool It holds the screw studs firmly so the screw don't fall out as I am using my cordless drill to install screws into my winter boots.

Put these on my rubber tracks , mini bull dozer , worked Great!!! No more sliding sideways backwards or forwards on steep driveways removing snow and ice. These are easy to install with the tool that comes with them, DO NOT pre-drill to install, just use the tool provided. I pre-drilled appx 20-30 studs in my under carriage. Lost every stud that I pre-drilled the under carriage for. Screw them in, set them fairly deep and they will stay put and give excellent traction on ice andsnow.

It seems they really are hard. Wore out the install tool after only about 20 screwed in. It barely fit and the inside rounded out quickly. I switched to a 6mm socket and it works fine. The included tool was nearly useless. Just go straight to your 1/4 drive 6mm and drive them in with your drill set to a low torque setting. They seem to be exactly as described. Haven't put them through their paces yet. I'll update if I'm disappointed.

They are easy to install and work great on lawn mowers to gain a little more traction.

Lol easy to install 😂 this is the hardest to install ice stud on the planet. The adapter they give you is to fat and doesn't work. I used vice grips and got about 10 in each boot. Short morning walk with the dog and I have 7 in one and 8 in the other boot.

They barely make a mark on glass. Real Tungsten Carbide should scratch the hell out of everything except diamond.

Put these on my Fat Bike/Snow Bike because I dont want to be the source of a good chuckle when my bike slams me to the ice in front of 12 guys. They are awesome! Each bag came with a socket to drive them. I used my grinding wheel to shave off about 3/16 from the socket face. When you drive them with the socket, the Socket was digging into the tire. You either drive it part way with the socket, then tighten them in further with pliers, or grind the face off the socket. Studs themselves are perfect size (9 mm) and drive into the tire well.

Super easy to install and really helps with grip in the winter. Way cheaper than having a shop do it.

These are pretty small studs. But I bought them knowing that. My intended use was for my seed spreader to use it to spread salt in the winter. The spreader has plastic wheels that slide when trying to spread salt on our driveway on anything besides bare pavement. Took about 25-30 studs per wheel and it works perfectly on snow and ice. The spreader will still work fine in summer to spread seed and fertilizer as it will be used on grass/soil. I noted some complaints about the included installation tool, but it works fine for me. Inserted into the power nut driver and never slipped or stripped a stud. You do have to stop every 5-10 studs though and make sure the socket portion is clear as bits of plastic/dirt would pack in and the stud wouldn't go in as far. Quick blast of air and all was good again. That's not a problem of the installation tool though. It worked fine. If you're looking for some small studs to do a small job, I fully recommend these!

Very good .. I ordered the 9mm, but they were too short.. these are 12 mm and did the job well .. very good on ice..

Easy install, will see how they work and will be back

These are perfect! I used a cordless drill to install them on an old pair of shoes that were still comfortable to wear but lost most of their tread, to use on ice. I put 25 into the bottom of each shoe. They are super small so I was worried they would fall out. NOPE! 2+ weeks and use the shoes every day and haven't lost a single stud yet. Have been on ice many times during the two weeks and not as much as a slip.

The driver bit that comes with studs doesn't fully engage. The picture of the studs shows that it have full plenty of shoulder for the socket to engage, not the case. I bought 600 of these things and all of them only had a sliver or the shoulder just above the thread that engaged the socket. Had to use an actual socket and even then it didn't drive the stud deep enough, leaving it proud and not fully secured in the tire. I wouldn't even consider giving them a second try since all of the separate bags were the same.