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Drive inner square 10 mm (3 8) Diameter: 2 3 85 mm Output: external square 10 mm (3 8) Length: 51 mm Ga: ga18a g: 85 Original Facom 3 8 with impact universal joint › See more product details; Product description Impact universal joint, internal square drive 10 mm (3/8 inch), output external square 10 mm (3/8 inch); Product description Impact universal joint, internal square drive 10 mm (3/8 inch), output external square 10 mm (3/8 inch); Impact universal joint, internal square drive 10 mm (3/8 inch), output external square 10 mm (3/8 inch)