Optimizes braking efficiency during commutes, competitive cycling event, or trail cycling requiring suited wheel configuration Engineered with universals compatibility, this bicycles brake adapter, and tourings bikes without compromising frame Essential for folding bike enthusiasts, mountain bikers, and road cyclists pursues enhances brake compatibility during wheel upgraded Upgraded your bike ' s braking systems with this durability aluminum V brake extension adapter, for seamlessly 406 to 451 wheel conversions and easyly installation Consist of light weight yet aluminum alloys, this brake calipers adapter ensures precise equipment and reliability on various bicycles models