The complete Kahn Certifier line has the right steel in the right place for the right modification every time. The line has been designed for maximum versatility in modification. Bumped toe for long wear, 3/4 fullered, 6 evenly spaced nail holes for options and a short heel check, punched center stock for a full fit and a strong nail, best nail pitch. The 8mm (5/16) section provides a lighter section that is shaped more easily cold. Symmetrical front shape allows for easily fitting left or right foot. The Kahn Forge unique sizing system provides 1/2" steps in circumference and the marking provides a half size line as a grinding guide and width of shoe measurement for easy selection. Punched for city head and slim blade nails.