BAZHOU Power handle Spinner Model:Steering Wheel Ball Knob is fit the steering wheel diameter below 32mm/1.26in, helps beginners and lady drivers to drive safely and conveniently. Easy for Operation:Clip the ring on the steering wheel at a proper position. Screw the bolt up to fix the ring securely,you can install it by yourself without installing it in a professional after-sales center. Alloy +ABS material:Alloy bolt + ABS knob with plating,ABS are high impact resistance, high heat resistance, flame retardant, enhanced;Alloy is good weather resistance, good thermal conductivity. High performance:With rubber band in the bayonet to protect your steering wheel,max rotated angle can up to 90 degree,when turning car, it lessens the turning radius,steer softly when driving slowly and parking cars,It won't waste you too much energy. Size: Height 8.5cm Color: as pictured Delivery content: 1pc, steering wheel booster ball