SAE, USS, Standard, Beveled, Large Outside Diameter
PEEK, Nylon, Phenolic Resin, Brass, Alloy Steel
20 mm, 18 mm, 2 3/16", 1 37/64", 15/16"
0.578", 0.563", 0.875", 1.125", 1.25"
Chrome-Plated, NL-19, Plain, Armor Coat, Black Oxide
1.8 mm, 3/16", 9/32", 17/64", 4.6 mm