External Hex, Internal Hex, Internal Torx, External Torx
1/4 ", 5.5 mm, 5/8 ", 15/16 ", 1-3/8 "
1/2, 2-1/2, 1, 1-1/2, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/8 in, 58 mm, 2-15/16 in, 3-3/8 in, 1-1/2 in
4-Point, 6-Point, 7-Point, 12-Point, 8-Point
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