ITEM NAME:Blue 18cm Aluminum Alloy Manual Gear Shift Shifter Lever Knob for Car Description Material: aluminum alloy Color:blue Size: 18CM Product list: gear shift knob *1, thread adapter *3( M8/M10/M12 ) Installation: 1. Remove shift boot console so that you can see the shift lever, and original factory shift knob from the shifter. 2. Package comes with 3 plastic hose with different diameter. Verify which plastic hose can fit the shift lever. 3. Place the shift knob collar over the shaft with thread facing upwards 4. Place shift knob over spacer 5. Screw collar to base of shift knob 6. Finish installation, ensure the gear knob is firmly attached to the shifter 7. 3 different size screw adapter: 8mm,10mm,12mm Blue 18cm Long Aluminum Alloy Manual Gear Shift Shifter Lever Knob for Car Auto.Size: 18CM. Remove shift boot console so that you can see the shift lever, and original factory shift knob from the shifter. Finish installation, ensure the gear knob is firmly attached to the shifter.