Item Type: Shift Knob Boot Retainer Material: Aluminum Alloy Fitment: Fit Most M10 x1.25 threaded manual transmission vehicles Fit for Nissan Fit for Mazda Fit for Mitsubishi etc. Package List 1 x Shift Knob Boot Retainer 1Designed to fix the shift knob, mounted between the bottom of the shift knob and the top of the shift boot . 2Inner diameter of M10 x 1.25, suitable for most manual transmission vehicles, allowing you to better control your car. 3Made of highquality aluminum alloy exquisitely processed, wearresistant and corrosionresistant, and has a long service life. 4Keep your shift lever clean. No need of complicated mounting tools, easy to install. 5Wide range of application, compatible with most cars. Just make sure that the original car's shift lever can be removed.