The Automotive Raw Edge Belt Is Flexible And Can Be Used On Small Diameter Pulleys For High Rpm Applications. The Cogs Provide Additional Room For Dissipation Of Heat Generated Due To Friction Resulting In Longer Belt Life. This Type Of Belt Transmits More Power Than Wrapped Belts. Dim A (1): 3/4" X 34.53" Poly; Fits John Deere Tractor M.