* The first-ever performance stud for single-ply tracks * Built to effortlessly penetrate lake ice * Through-hardened carbon steel with 60 degrees carbide insert * 1.2" head with anti-rotation lines * 5/16" threads, shortened to increase the length of its narrow shank * For use in single-ply tracks and Grand Digger support plates * Proper nuts included * 1325, 1450 and 1575 series come with Woody's Short Big Nuts Note : 2.52 pitch single ply tracks cannot accommodate Round Grand Digger support plates - must use Square or Double Grand Diggers