External Hex, Internal Hex, Internal Torx
18 mm, 5/8 ", 15/16 ", 1-3/8 ", 21 mm
2-1/2, 3/8, 1/4, 1/2, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
7/8 in, 8 in, 28 mm, 4-1/8 in, 13/16 in
External Torx, 7-Point, 8-Point, 4-Point, 6-Point
-