Woody's Steel Chisel Tooth Traction Master Competition Studs are built for ice, snow, and grass drags, with a flat steel tip that grabs serious surface area and a patented Traction Master head that cups the track for rigidity and support. The through-hardened carbon steel body and 1" head with track trapping design suit two-ply tracks and support plates. Each stud includes the proper nut, and Woody's recommends snowmobile studs protrude 1/4" to 3/8" over the track lug. This 48-count set of Short 1.630 studs with Big Nut keeps you planted and in control across the finish line.