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Proto Industrial Tools has introduced a range of 36 combination wrenches with longer than normal shanks to improve leverage and hand clearance.The box end of the spanner has a radiused corner design, called Torque Plus, to transfer pressure from the corners of the fastener to the stronger flats. This design is claimed to allow at least 15 per cent more torque to be applied. The box end is also thickened to allow for this extra torque.The alloy steel combination wrenches are available ...

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