STURDY MATERIAL: The handlebar height adapter is made of refined aluminum alloy, high toughness, no deformation, resistance, sturdy and practical. DOUBLE SCREW FASTENING: The bike handlebar extender is equipped with double screw locks and steel screws to make the handlebar tighter and prevent the handlebar from loosening and falling off, reducing hidden dangers when riding. ADJUSTABLE HEIGHT: The bike fork bar extension adjusting the height can effectively reduce the pressure on your lower back and lift it to your comfortable position. COMFORTABLE CYCLING: You can properly adjust the handlebar height with the lift accessory so you can maintain traction more easily on steep hills, giving you a comfortable and easy riding experience. WIDE COMPATIBILITY: The bike stem extension is suitable for most bikes, mountain bikes and road bikes. Colour:Black Material:aluminum alloy Size:30mm Package Contents: 1 * Bicycle handlebar heightening device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.