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Wera Wera 7771 Click-Torque X Ring Spanner Insert 21mm
A ring spanner insert for hexagon screw heads or nuts that can also be used with torque wrenches that are part of the Click-Torque X series. This model also includes a 9 x 12mm holder and is completed with a chrome vanadium steel build for excellent durability and to make it suitable for heavy loads.