Instructions: Anti-skidding.360 degree adjustable,bearing support.silence smoothly. Using high quality silica gel Eco-friend materials,No-off smell. Smoothly wide area silica gel.No voice when turning the steering wheel. Good quality bearing imported from German Internal carbon steel.with the quality of high strength of anti-impact, good toughness,to ensure stability. Column shape design of the steering wheel. To make sure the steering wheel fit with it. Silica gel surface internal with strong glutinosity Silica and booster with special process to adherence,which makes the silica won't fall off. Easy to install:Just recessed into steering steel.no need other screws to fix. Simple color. Warnings: Make sure the booster ball handle is mounted securely before using. Check the bolt often if fixed or not. Never use additional adhesive liquid. Avoid using the booster ball handle when you drive with high speed (more than 40KM/H). If the steering wheel cover is installed, mount the booster ball handle after taking off the wheel cover, and install the cover again over it. package listing: 1 * Booster Ball