Product Description:The ROP Shop replacement Centrifugal Clutch with 5/8″ Bore, 11 Teeth for Go Kart Mini Bike with #35 ChainSpecs – Bore: 5/8″. Number of Teeth: 11. Compatible with #35 Chain. Non-directional. Oilite Bushing. Sintered Metal Shoes. Refer to images 2 & 3 for more informationIncludes – (1) Centrifugal Clutch; comes as shown in the first imageThis clutch does NOT include a set of screws or keywayThis clutch is designed to be held on by threading a bolt with a lock washer and fender washer onto the end of the crankshaft. For proper maintenance you should add a couple drops of oil to the bushing each time before riding