The Easy-Rider Steering Knob makes mowing a breeze by giving added comfort and control of your tractor with one hand. The knob is easy to mount on the steering wheel and includes all the hardware and tools needed to install. It also works great on boats, golf carts and more.. Leg saver clamp has no protruding bolts. Quick and easy installation. Low friction ball bearings for smooth spinning. Makes backing up a breeze. Riding Mower Part/Accessory Type: Steering Wheel Spinner Knob