Shaft length:65mm/2.56";shaft diameter at splines:14mm/0.55"(as the picture shows). Replacement for 4 stroke GY6 50cc 60cc 80cc 139QMB engine scooters mopeds. Number of teeth:7 tooth,model:7 tooth start gear for GY6 engine.This kick start kit fits for scooters. GY6 kick start is combination and materials.Durable and easy to use.
