These high performance 12-point sockets are what you need to tackle 12-point fasteners as well as hex and square fasteners. 24-piece set includes (12) 3/8 in. drive 12-point deep sockets: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm, (12) 3/8 in.
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