Aluminum Alloy Bike Fork Stem Extender Handlebar Riser Bicycle Cycle Stem Head Up Adapter Bike Neck Extender This bike fork stem extender is a helpful tool to raise up the head handlebar of your bicycle, making it easier to hold traction on the steep hill, and bring you enjoyable and relaxing Cycle experience without bending the body too low. Feature: For 28.6 mm / 1.1 in front fork. Anodized aluminum alloy construction, solid, strong, corrosion-resistant and rust-free. Suitable for mountain bicycle to rise up the handlebar fork stem. Help to extend the fork stem by 70 mm / 2.8 in maximally. The height can be adjusted by adjusting the number and type of gaskets, making it easier to hold traction on the steep hill. Easy installation, just connect up the front fork stem. Specifications: Material: Aluminum alloy Color: Red / Blue / Black / Silver ( optional ). Extension height: 70 mm / 2.8 in Fork stem diameter: 28.6 mm (standard) Product Length: 124 mm / 4.9  in Product Weight: 190 g / 6.7 oz Packing Size: 13 * 5 * 4.4 cm / 5.1 * 2.0 * 1.7 in Packing Weight: 205 g / 7.2 oz Package List:  1 * Bike Stem Extender 4 * Gaskets 1 * Thread Rod 1 * Hex Wrench