Groz Combination Ring and Open Ender Spanner Wrench. Cold stamped chrome vanadium (31CrV3) steel. Heat treated to 42-48 HRC for increased work life. Wrenches feature a super drive broach reducing corner rounding & applying more torque 15 degree Offset optimal for most applications. Size stamped on both ends for easy identification. Conforms to DIN Standard 3113A. Weight: 178g.

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