Woody's Gold Digger Modified studs are built for snowmobile racers who need serious bite, with a sharpened 45° carbide tip that hooks up on enduro, ice oval, and cross country courses. The patented Traction Master head cups the track for rigidity and support, and each stud is through-hardened carbon steel with a 1" head and a track-trapping design. They fit two-ply tracks with support plates, and the proper nuts come included so you can install them right away. Woody's recommends letting the studs protrude 1/4" to 3/8" over the track lug for the best results.