MMG Variable Speed V-belts offer stability and flexibility at the same time. BELT SIZE: 743 x 20 x 30 | Oil and heat resistant KEVLAR reinforced, same material that bullet proof vests are made of. Save time and money, go for quality. Fits many 125cc/150cc Scooters Mopeds ATVs Go Karts and many more Kevlar belts will last longer than a standard belt, they don’t slip easily. Premium belt provides longer durability for high performance applications. This belt is your best choice for an upgrade. Fits on many scooters, motorcycles and go karts. Quality made for high mileage and reliability. Oil and heat resistant. Part No.: MGVK743Q Outside Circumference (mm): 743 (29.25 inch) Top Width (mm): 20 (0.79 inch) Groove Angle / Pitch: 30 degree Fits 125/150cc 4-stroke GY6 ATVs and Street Scooters with 10 inch rear wheel. CAUTION Use this product only on applications specified in owner’s manual literature. Install and maintain products according to the vehicle manufacturer’s recommended procedures