Also known as Allen wrenches Sizes include: .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8" Provides 360° of rotation at up to a 35° angle Produced from 8650 chrome nickel alloy steel Comes in molded plastic holder