Features: 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. Specification: Item Type: Motorcycle Handlebar End Plug Material: High quality aluminum + rubber Color: Black Process: 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. Note: 1. Please confirm the size is appropriate before purchase. 2. Conventional handlebars are 17.5mm/0.7in, the other two are spares for some motorcycles modified with variable?diameter handlebars, 8mm/0.3in screws are fit for series handlebars with 8mm/0.3in threaded handlebars at the end, and are equipped with 6mm screws. 3. Please fully understand the usage of this product. Do not loosen your right hand during riding. 4. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.