Specifications for Belt Size 633-3M-15 Cross References Numbers: 633-3M,  633-3M-15,  633-3M/15 Number of Teeth 211 *Length of Belt 633mm or ~24-15/16" Peak to Peak Distance Between Two Adjacent Belt Teeth 3mm or ~1/8" Width of Belt 15mm or ~9/16"

*Length of belt is the overall size of the belt's loop measured as if the belt were cut between two adjacent teeth and laid out on a flat surface.