GOOFIT Complete Crankshaft Connecting Rod Assembly for 2-Stroke 47cc 49cc Pocket Bike Come complete with the connecting rods, top end bearings, and crankshaft webs The pin-hole diameter:12mm There will fits for 2-stroke 47cc 49cc Pocket Bike They're completely rebuildable Reminder/Note:To ensure you purchase the correct product,please read the product description carefully or image size.thanks for your attention.if you have any issues or need any help,welcome to contact with us before or after your purchase.we will do our best to help you solve it