Centrifugal clutch: 3/4″ bore centrifugal clutch 12 tooth design for 2-6.5 HP Engines 2300??300 PRM with 3/4″ Shaft and 3/16″ Key way. Compatibility: Compatible with Honda GC160, GC190, GX120, GX140, GX160, GX200, Harbor Freight Greyhound 196cc, Harbor Freight Predator 212cc, Tecumseh Briggs and Stratton Tecumseh engines. High quality and professional clutch: Made of Quality Iron Material, Which is Lightweight, Portable, Sturdy, Durable, Maximum Torque, Wear-resisting and Fast Heat Disation. Package included: 1*Centrifugal Clutch, 1* #35 Chain, 2*Set Screws. Commonly use: Go Kart and Mini Bike, Lawnmower and Fun Kart, also it can be used for many other applications. Product Description Description: 100% Brand new, Never been used. Shaft Bore: 3/4″ Shaft and 3/16″ Key way Accommodates: #35 Chain Tooth: 12 Centrifugal clutch 3/4″ bore 12 tooth design. A high quality and professional clutch. High impact,wear resistant that is super durable. Commonly used on go karts, mini bikes,Lawnmow