Feature: *1.It is made of aluminum alloy and has higher corrosion resistance and rust resistance. *2.The Anti-slip groove design to ensure that the core does not deflect. *3.Adjustable screw spacing to ensure line pipe relaxation. *4.Toggle the controller to adjust at any time without getting off. *5.After being installed, the button is equivalent to the left-hand transmission's dialing position, which is more in line with the angle of the fingers during riding than the remote control on the horizontal bar. It can be adjusted without releasing the handbrake, which is more convenient and safer. Specifications: Material: aluminum alloy Color: Black/Red Optional size: 22.2/24mm Installation specifications: suitable for 22.2 / 24MM handlebar use, please determine your own handlebar specifications before buying. Package Contents: 1 * Line controller? 2 * Installation wrench Note: 1.All pictures are professionally color-coded, but due to the different ambient light and different display device settings, there may be some deviations between the pictures you see and the items themselves. Please understand. 2.The data is measured manually, there may be some deviation, but it does not affect the use.