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