External Hex, Internal Hex, Internal Torx
1-5/16 ", 16 mm, 5/8 ", 1-3/8 ", 1-1/4 "
3/8, 1/2, 2-1/2, 1-1/2, 1
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
1-7/8 in, 8 in, 58 mm, 3/4 in, 9/16 in, 35 mm
8-Point, 4-Point, 7-Point, 6-Point, 12-Point
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