RTS GRIPMASTER ICE STUDS for Snowmobiles and ATV/UTV tires These studs, proven under the toughest conditions, are now available for snowmobile tracks. Sharpened carbide tip provides excellent traction in icy conditions. The solid 70° carbide head provides longer wear and superior penetration. The specially designed thread is self-tapping and won’t pull out. It’s easy to install, easy to remove and leaves only a tiny hole that doesn’t load up with dirt or ice. No special tools required. No warranty on pull-out or track damage. Installation times may vary. Recommend .5 length for ATV/ UTV tires.