Rear drive sprocket commonly used on electric and gas scooters, pocket bikes, and skateboards. 47 Tooth 1-1/8 ID, 3-7/8 OD. Three mounting holes measuring 1-3/8″ apart. Rear drive scooter sprocket commonly used on electric and gas scooters and pocket bikes. This scooter sprocket can also be used on many custom projects matched with 8mm 05T [...]