External Hex, Internal Hex, Internal Torx
2-1/2 ", 7 mm, 1-1/2 ", 5/8 ", 1-3/8 "
1, 1/2, 1-1/2, 2-1/2, 3/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
8 in, 4-1/16 in, 16 mm, 19 mm, 58 mm
External Torx, 4-Point, 7-Point, 12-Point, 6-Point
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