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 cycling experience without bending the body too low. Feature: For 28.6mm / 1.1in front fork. Sand blasted aluminum alloy construction, solid, b, corrosion-resistant and rust-free. Suitable for mountain bicycle to rise up the handlebar fork stem. Help to extend the fork stem by 140 mm / 5.5 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 original front fork stem. Specifications: Material: Aluminum alloy Color: Black Fork stem diameter: 28.6 mm (standard) Size: S / M / L S Product Size: 115 * 28.6 mm / 4.5 * 1.1 in Product Weight: 157 g / 5.5 oz Extension height: 45 mm / 1.8 in M Product Size: 180 * 28.6 mm / 7.1 * 1.1 in Product Weight: 244.8 g / 8.6 oz Extension height: 110 mm / 4.3 in L Product Size: 210 * 28.6 mm / 8.3 * 1.1 in Product Weight: 285.1 g / 10.1 oz Extension height: 140 mm / 5.5 in Package List: 1 * Bike Stem Extender For 28.6mm / 1.1in front fork. Sand blasted 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 140 mm / 5.5 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.