Saves you from being stranded or damaging your derailleur. Easy to install with basic tools. Get back on the trail or road fast! USD$ 3. Price when purchased... [CNC MACHINED FOR STABILITY] - The CNC machined tail hook offers stable performance with an anodized finish for a sleek appearance. [EASY INSTALLATION] - Simple to install and disassemble, this bike tail hook offers easy and practicality for any rider. BIKE PARTS: Bike tail hook derailleur replacement, suitable for mountain or road bikes, replace the old hook to ensure stable operation of the bike. STAINLESS STEEL: Made of excellent stainless steel material, which has high hardness, rustproof and corrosion resistant, and can be for a long time [WIDE COMPATIBILITY] - This hanger fits most types of bikes, ensuring compatibility and providing a great user experience. Giant Rear MTB & Hybrid Derailleur Hanger Bike Derailleur Hanger Alloy Bike MTB Cycle Tail Hook Bike Rear Derailleur Link Hanger Derailleur Hanger Screw Set Mountain Road Bike Gear Hanger Rear Derailleur Hanger