Sno-Stuff has completely redone and improved bar selection to better reflect industry changesAll bars feature extended studs for convenienceAll carbides use the same 7/16" bar stock with the exact same 60° controlling carbide and 1" wearpads, the only difference being the length of the controlling carbide60° controlling carbide is physically larger and stays sharper for greater control and longevity505 SERIES CARBIDE4" 60° CONTROLLING CARBIDESno-Stuff's most popular carbide runner4" x 60° of controlling carbide provides great steering control and longevity1" tapered carbide wear pads front and rear provide exceptional wear resistance when compared to traditional hard surface bars506 SERIES CARBIDE6" 60° CONTROLLING CARBIDESno-Stuff has increased this 7/16" bar's controlling carbide to a full 6"Perfect for high-performance machines and studded tracksTwo 1" carbide wear pads front and rear507 SERIES CARBIDE8" 60° CONTROLLING CARBIDEDesigned for the racing enthusiast and demanding trail rider7/16" bar has 8" of controlling carbide and two 1" wear pads for excellent control and extreme wear resistance