These crescent flare nut wrenches are made from chrome vanadium, specially formulated and heat-treated for high strength and superior resistance to abrasion and corrosion. Hex shaped heads give more points of contact on the fastener to prevent damage. Sizes stamped on both sides of the wrench beam for quick identification. Fastener size measures 3/8" x 7/16", 1/2" x 9/16", and 5/8" x 11/16".
