Kold Kutter Tire Traction Ice Screws 1/2" - 250pk Kold Kutter screws are the original and trusted ice racing screw for AMA US Grand National Champions, CMRC Canadian racers, and athletes worldwide Our screws are perfect for ATVs and offroad vehicles alike. Most ATVs have large lugs which allow larger size screws for better retainment and traction. Use these on the ice or on the trail for maximum grip Farmers, contractors, construction crews and others rely on Kold Kutter screws for the extra bite they need during the winter to stabilize their large equipment while on the job Skid steer tractors, such as Bobcat, New Holland, John Deere and other brands benefit from increased traction that Kold Kutter screws provide - whether they're equipped with tracks or tires! Indoor and outdoor ice rinks around the world rely on Zambonis to properly smooth and level ice - Kold Kutter screws help keep the Zambonis from slipping or sliding and offer increased traction so you can get the job done faster Size: 1/2 in. x 8-18; head height is .190 in.