For use in single-ply tracks and Grand Digger« Support Plates Through-hardened carbon steel with 60? carbide insert Proper nuts included 1.2" head with anti-rotation lines Packages available with these studs, nuts and Round Grand Digger« plates - designed for 2.86 and 3.00 pitch single-ply tracks 5/16" threads The most popular single-ply track stud available for trail riding. STUD CARB GRMAST 504PK