External Hex, Internal Hex, Internal Torx
2-1/2 ", 4 mm, 30 mm, 1-1/8 ", 5/8 "
2-1/2, 1/2, 3/4, 1/4, 3/8
Phosphated, Phosphatized, Gun-metal, Black Oxide, Black Phosphate
E7, 8 in, 21 mm, 4-3/4 in, 3-3/8 in
8-Point, 7-Point, 12-Point, 6-Point, 4-Point
-