Specifications for Belt Size 522-3M-10 Cross References Numbers: 522-3M,  522-3M-10,  522-3M/10 Number of Teeth 174 *Length of Belt 522mm or ~20-1/2" Peak to Peak Distance Between Two Adjacent Belt Teeth 3mm or ~1/8" Width of Belt 10mm or ~3/8"

*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.