SAE, Mil-Spec, Standard, Beveled, Large Outside Diameter
PEEK, Nylon, Phenolic Resin, Brass, Alloy Steel
16 mm, 2 3/16", 1 37/64", 15/16", 1 5/16"
6.4 mm, 0.625", 0.75", 0.875", 1.125"
NL-19, Plain, Armor Coat, Black Oxide, Zinc Yellow
3.1 mm, 4.6 mm, 1.1 mm, 0.35 mm, 1/4"