Specification: Shaft Bore: 1", Clutch OD: 107mm, Clutch Height: 56mm, Suitable for 40-41-420 roller chain with 3/16" built-in key .
High quality and professional clutch: Made of Quality Iron Material, Which is Lightweight, Portable, Sturdy, Durable, Maximum Torque, Wear-resisting and Fast Heat Dissipation
Engaging speed: Up to be 2300 RPM.The maximum torque of the clutch is 6N at 3600 RPM
Commonly use: Go Kart and Mini Bike, Lawnmower and Fun Kart, also it can be used for many other applications