Fork Hook For Brompton BikeFork Hook For Brompton Bike Fork Hook For Brompton Bike is an accessory for your Brompton bike, used to secure the wheel to your Brompton frame when bike is folded. Improved design compared to original make the bike more stable when folded. Made from CNC ed aluminum for extra strength and rust resistance. Available in several colors. Compatibility: Brompton bike Product: Fork Hook For Brompton Bike Material: Aluminum Alloy AL7075 T ,Engineering