Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 7/16 ", 20 mm, 1-3/8 "
2-1/2, 1, 1/2, 3/8, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Oxide, Black Phosphate
1-15/16 in, 9 mm, 1-11/16 in, 8 in, 11 mm
4-Point, External Torx, 8-Point, 6-Point, 7-Point
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