Internal Hex, Internal Torx, External Hex
4 mm, 5/16 ", 1-5/16 ", 5.5 mm, 1-3/8 "
1/4, 1-1/2, 3/4, 3/8, 2-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
4-1/16 in, 4-3/4 in, 39 mm, 5/16 in, 1-1/2 in
12-Point, 4-Point, 7-Point, External Torx, 6-Point
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