This Problem Solvers HDM Front Mech Adapter 26mm offset is designed for use with 68/73mm BB frames and is compatible with both 2x and 3x front mechs. The black clamp-on adapter allows for easy front derailleur mounting and is suitable for universal bike types. With only one item included, this front derailleur clamp is an essential part for your bike components and parts collection. Ideal for cycling enthusiasts, it is a must-have accessory for all your sporting goods needs.