Smooth Steering Wheel Knob Fits steering wheels from 1.2 cm to 4.4 cm in diameter Luxurious, smooth, and effortless turning Universal fit for steering wheels – forklifts, lawn mowers, tractors, boats, etc. Easy to install steering wheel knob – all necessary tools and hardware are included Installation Instructions – Attach the steering wheel bracket to the steering wheel, then add screws from the bottom to the top. Tighten until it is firmly attached to the steering wheel