External Hex, Internal Hex, Internal Torx
20 mm, 5/8 ", 27 mm, 1-3/8 ", 1-1/4 "
1/2, 2-1/2, 1-1/2, 1, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-9/16 in, 8 in, 19 mm, 4-1/8 in, 39 mm
4-Point, 7-Point, 8-Point, 6-Point, 12-Point
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