Woody's Gold Digger Traction Master is the snowmobile industry's premier push-through stud with rugged durability. Used to increase your ability to start, stop, and turn safely while riding trails and boondocking. Its patented track-trapping head provides unbeatable rigidity and support while its 60° carbide pin protects the stud from wearing out. The 1325 Series is intended for two-ply tracks with a 1.220" - 1.250" lug height. Please check for tunnel protection before studding your snowmobile track.