Knurled ring for extra grip with oily fingers. Supplied with socket rail.Product Specification. Type: 1/2"Sq Drive - Imperial. Contents: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8", Socket Rail.
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