• The thread pitch is 8mm, 10mm, 12mm (M8 × 1.25, M10 x 1.25 , M12 x 1.25) 3 adapter included (which are all inside one shift knob to fit most manual cars). • To install, simply twist, loosen, and remove the stock shift knob and replace with this LED shift knob. • There are LEDs that are built into this shift knob which are activated by simply touching it • The LED light will stay on for 30 seconds and automatically turn off afterwards. • The LEDs are powered by an internal battery source which is rechargeable. (In the meanwhile of 30 seconds, the light colors will change automatically). • A charger is included in this package so you can recharge it with the car cigarette lighter outlet. Compatibility: • Fit for most of manual car vehicles, some Automatic without button device) Details: • Built-in rechargeable high-quality lithium battery. When first charge, 8 hours are required. Then for the later charge, 1 hour is enough. With onetime charge, this shift level knob can