Allstar Safety Wire Drill Fixture features a safety wire fixture that allows accurately drilled holes in fasteners so they can be mechanically locked in place with safety wires. The fixture accommodates 3/16 inches, 1/4 inches, 5/16 inches., 3/8 inches, 7/16 inches, 1/2 inches and 5/8 inches fasteners. The guide bolt tightens against fasteners, holding it secure for drilling and has two 1/16 inch bits which store conveniently in the fixture..