Specification: Item Type: Gear Shift Knob Material: Artificial Leather + Aluminum Alloy Size: Approx. 2.17x2.95in/55x75mm (W x H) Threaded Adapters Inner Diameter: Approx. 8mm/0.315in, 10mm/0.394in, 12mm/0.472in (Caliber M8, M10, M12) INSTALLATION STEPS: 1. Unscrew the original gear shifter knob to remove it from the gear stick. 2. Wrap a few turns of electrical tape around the gear stick thread if needed to ensure a secure fit. 3. Remove the aluminum alloy bottom cover of the shifter head and place it on the shifting rod. 4. Install the matching threaded adapter with black rubber sleeve onto the shifting stick. 5. Screw the shift handle onto the shifting rod using the provided screws and hex wrench. 6. Rotate the aluminum bottom cover into the car shift knob and tighten securely. Compatibility Notes: - Ensure the original shifter knob is removable. - Not suitable for vehicles with a non-removable shifter that includes an integrated lock or function button. - For manual transmissions: Not compatible if the reverse gear requires lifting the shifter knob. - For automatic transmissions: Not compatible if reverse gear is positioned next to first gear. Package List: 1 x Gear Shift Knob 3 x Adapter 4 x Fixed Screw 1 x Wrench