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External square drive 12.5 = 1⁄2 inch - Internal square (Robertson) drive 6.3 = 1⁄4 inches. Number of packs: 1 Package weight: 90 g Country of origin: Germany, Weight: 0.110231131 Pounds, Manufacturer: Hermann Zerver GmbH & Co. KG
External square drive 12.5 = 1⁄2 inch - Internal square (Robertson) drive 6.3 = 1⁄4 inches. Number of packs: 1 Package weight: 90 g Country of origin: Germany, Weight: 0.110231131 Pounds, Manufacturer: Hermann Zerver GmbH & Co. KG