External Hex, Internal Hex, Internal Torx
1-5/16 ", 9/16 ", 1/4 ", 5/8 ", 21 mm
2-1/2, 3/8, 3/4, 1/2, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
8 in, 1-1/4 in, 58 mm, 39 mm, 3-3/8 in
8-Point, 6-Point, External Torx, 7-Point, 4-Point
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