Application for:for Mini Bikes and for Go Karts, for Lawnmowers,for Scooter X Sport Kart, for Mini Bike, for Mini Chopper, for Lawnmower, for Garden Equipment, for Log Splitters, for Pumps, for Riding Mowers, for Snow Throwers, for Garden Tractors, and for Mini Motorcycles Specifications:Shaft Bore : 5/8”Tooth: 11Keyway: 3/16”Compatible Chain Size: #35Horse Power: 8 HP MaxEngagement Speed: 2000??100 RPMPackage Includes:1x Centrifugal Clutch