External Hex, Internal Hex, Internal Torx
7/32 ", 2-1/2 ", 7 mm, 5/8 ", 1-3/8 "
1/2, 1/4, 3/8, 1-1/2, 2-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-9/16 in, 8 in, 4-1/8 in, 4-3/4 in, 2-15/16 in
8-Point, 12-Point, External Torx, 6-Point, 7-Point
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