Specifications for Belt Size 850-5M-18 Cross References Numbers: 850-5M,  850-5M-18,  850-5M/18 Number of Teeth 170 *Length of Belt 850mm or ~33-7/16" Peak to Peak Distance Between Two Adjacent Belt Teeth 5mm or ~3/16" Width of Belt 18mm or ~11/16"

*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.