Specifications for Belt Size 450-5M-9 Cross References Numbers: 450-5M,  450-5M-9,  450-5M/9 Number of Teeth 90 *Length of Belt 450mm or ~17-11/16" Peak to Peak Distance Between Two Adjacent Belt Teeth 5mm or ~3/16" Width of Belt 9mm or ~5/16"

*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.