V Brake Extension 406 to 451 Conversion Seat Converter Adapter for Bike Wheelset

ALUMINUM MATERIAL: Main body is made of aluminum alloy, light weight and high strength, oxidation resistance and corrosion resistance. MAIN FUNCTION: Can be used for 14 inch modified 16 inch, 16 inch modified 18 inch, 18 inch modified 20 inch, 20 inch changed 451 wheel set. USEFUL TOOL: Good chioce with helpful performance in changing the small bike wheels into a big wheels, Item Type: V Brake Extension Material: Aluminium Alloy Application: For Mountain Bike, Folding Bike Weight: Approx.32gCelsius1.1oz