Available 25mm, 30mm, 1-1/4", 40mm & 50mm Sizes Made from High Quality Chromemoly and Mild Steel Precision Ground O.D. to the highest of Standards Precision Machined Key Locations Pegged Key Design standard on all axles 6mm, 1/4" & 8mm pegged keys available Custom Length and Key Locations Available If you are looking for the highest quality & consistency, look no further! Used by many WKA, SKUSA & Rotax Regional, National and Grand National Champions