Characteristics: 100% new high quality. Made of high-strength 6061 T6 aluminum alloy CNC machined for greater strength and durability. Installed between the handlebar and front fork, installation is simple, just connect the front fork. Easy to use, the handlebar height is adjustable and the fork extends up to 35mm. Suitable for long-distance travel. Suitable for bicycles, mountain bikes, BMX, folding mats. The valve stem and impeller are set in the same direction, and ten valve stem clamp screws are installed, which is safe and durable. Technical data: Material: aluminum alloy Color : black Matching Diameter: 28.6mm Length: approx. 14 cm / 5.5 inch Instructions: Insert the lever into the fork and place the height adjuster upwards until the lever height is preferred. Package List: 1 * bicycle stem extension; Note: