Internal Hex, Internal Torx, External Hex
1-1/8 ", 20 mm, 5.5 mm, 1-3/8 ", 7/8 "
1/4, 3/8, 1, 1-1/2, 2-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
7/8 in, 30 mm, 8 in, 4-1/16 in, 16 mm
8-Point, 6-Point, 12-Point, 7-Point, 4-Point
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