This is special designed for tightening or loosening virtually every camera tie-down screws made by OConnor, Sachtler, Cartoni, Panavision, Manfrotto, and others. Features an ergonomic T-handle shaped to fit the hand just right to put the torque to the fastener to tighten or loosen. The sturdy chrome slotted steel is 50mm in length and provides a great durability.