1、With accelerator constant speed function, it can effectively reduce fatigue caused by long‑distance driving. 2、When the handlebar is blocked, when the vehicle unfortunately falls to the ground, it can help you effectively protect the handlebar. 3、The accelerator constant speed function can effectively improve your safety on the road. 4、High-quality aluminum + rubber material, wear-resistant, corrosion-resistant, durable, and long service life. 5、CNC aluminum technology is exquisitely processed, not easy to rust, and does not need to be replaced frequently. Item Type: Motorcycle Handlebar End Plug Material: High quality aluminum + rubber Color: BlackProcess: CNC aluminum process Fitment: Fit for Motorcycle with 7/8in (22mm), inner diameter 17.5mm (1.4in) / 15mm (0.6in) / 13mm (0.5in) handlebars. (Please confirm the size is appropriate before purchase) How to Fix the Speed: 1. Press the constant speed knob to the throttle handle in the original state 2. Try to twist the throttle lever (when the throttle is turned off), the throttle lever can not rotate and the speed can be fixed 3. Do not press too tightly, you can manually return to the original state to end the constant speed effect 4. Secure before riding, Do NOT operate the knob while riding. 2 x Motorcycle Handlebar End Plug 2 x M6 Screws 2 x M8 Screws 6 x Adapters 4 x Adapter Fixing Screws