Universal Nebula Cloud Round Gear Shift Knob Acrylic Crystal Car Shift Knobs With 3pcs Screw Nut adapter Type: universal, both 5-Speed, 6-Speed or even some automatic transmission Size: 5.4 x 5.4cm(H*W); Material: aluminum alloy and high quality durable acrylic Easy to install, can be installed quickly, no modification required, directly exchange your original shifter knob by hand. The shift knob thread is M12*1.25 and coming with 3pcs sizes of threaded adapters (M8*1.25, M10*1.25, M10*1.5) fit manual or auto transmission cars. This round gear knob touches smoothly due to acrylic materials, offers a better griping and upgrades your driving comfort. This car knob can apply to most auto or manual cars, SUV or trucks, manual Transmission, directly replacement for the original shift knob, no complicated modification. It will not fit automatic shifter with push button or lock. Gives your car interior take on an altogether new aspect. Specifications: Material: acrylic and aluminum alloy Size: 5.4 x 5.4cm(H*W) Package Contents: Come with 3 aluminum alloy adapters: M8*1.25(0.315*0.049), M10*1.25(0.394*0.049), M10*1.5(0.394*0.059), 1 * Shift Knob with M12x1.25 thread size, for easier fitment. Package Included: 1 X gear shift knob 3 X adapters Installation steps: 1. Remove the original gear shift knob head of your car or vehicle. 2. Take the right size of adapters in the box, compare the size with the car shifter stick. 3. Put the new shift knob head into shifter stick. 4. Insert the new shift knob head deep into the car shifter stick. 5. Srew and tighten the shift knob firmly. Note: 1.Make sure your original stick shifter removable. 2.Not suitable for the original car shifter with its own irremovable lock/function button. 3.Not suitable for the reverse gear of original car shifter which need to lift up. 4.Cannot be installed for those cars with the reverse gear which next to the 1st gear.