This professional manual knob is specially designed for changing hand cranks. It is made of premium aluminum alloy, which is sturdy and durable, has an excellent texture. The product has a reasonable structure and excellent texture, which will provide you with a comfortable grip, smooth touch, and effectively improve your driving comfort. Features - Color: black. - Material: Resin, aluminum alloy. - Size: 13.00X4.70X2.70cm/ 5.11X1.85X1.06inch. - Instructions: Remove the gear head of the original car, choose an adaptor suitable for the original car and put it on the gear head of the original car, then put on the gear head and lock it with screws. - The stylish design and comfortable touch of this car gear knobs make it smoother and more convenient to use. - Simple and elegant appearance and nice shape, , it can perfectly match with your car interior. - Easy to install and replace, good texture and excellent performance makes it have a longer service life. - The length of this gear is proper, allows you to drive more comfortably, with better grip, and the dent design prevents you from slipping when using it. - Aluminum alloy and resin material, sturdy and durable, will not be easily damaged, and . Package list: 1 x gear knob 1 x adapter(8M) 1 x adapter(10M) 1 x adapter(12M) 3 x screws 1 x wrench