Stable and Durable Iron Material:The centrifugal clutch is made of high quality iron material, sturdy, wear-resisting, fast heat disation and with maximum torsion. Great Gift :Easy installation, a perfect replacement for your mini bike and go kart,and it s a great gift for go kart Lover With Master Link: By the time most clutches wear out the chain is in need or replacing as well. A worn out chain will stretch, causing the rollers to ride on top of the teeth of the chain. Easy Installation:The centrifugal clutch is easy to install, it is a perfect replacement for your mini bike and go kart. With set screws. you don’t need order other clutch. Description: 100% brand new aftermarket Centrifugal Clutch Chain Screw Sets with premium quality. Specification: Condition: 100% Brand New Material: Iron Plate, Powder Metallurgy Tooth Number: 12 Bore Size: 3/4″ Chain: #35 Manufacturer Part Number: PBH540687 Package Weight: Approx.1600g Packing List: 1 x Centrifugal Clutch 1 x Master