High Performance Micro V-Belts with triangular ribs running along the length of the belt. Drives can be reduced in size when compared with traditional V-belt drives as smaller pulleys can be used that will transmit equal or higher loads reducing space requirements and cost. Part numbers are identified by a 3 or 4 digit number e.g. 1321 which represents the nominal length in mm, a letter e.g. J the cross section and a 2 digit number e.g. 08 the number of ribs. 1321J08 etc.