Thule Acu Tight toggle without lock

Thule AcuTight Knob Torque Limiter for rear-mounted bike racks with frame holders. It replaces the standard knob and features a built-in torque limiter that "clicks" when the correct fastening force is reached. The controlled torque applied to the bike frame prevents under-tightening or over-tightening of the holder. Note: Fits all rear-mounted Thule bike racks with frame holders.