Asdomo Car Boat Vehicle Power Hickory Handle Steering Wheel Suicide Spinner Knob Booster Accessory Hickory Brown Auto Car Steering Wheel Suicide Spinner Handle Knob Booster. Clip the ring on the steering wheel at a proper position. Screw the bolt up to fix the ring securely. Suitable for the steering wheel diameter below 32 mm. Easy to drive, long-distance driving, the steering wheel is no longer heavy, more relaxed for driving. Size :8 x 5.6cm/3.14"x2.20"(approx).Knob Material: Wood Plastic.