HIMIWAY Half Twist Throttle SetDescription This accessory is designed to convert the original thumb throttle configuration of a vehicle model into a twist grip throttle. The product package includes: 1x Twist Grip Throttle, and 1x Pair of Handlebar Grips (one long, one short). Features Main Materials: PVC + PC ABS Main Dimensions: 155 45 48. 5 mm Please Note Important Note: If your ebike model is the D3Zebra D5 CadenceEscape or Big Dogand the original vehicle came factory equipped