The Vulcan 1/2 drive sockets are manufactured from chrome vanadium steel and heat treated for added strength and wear protection; providing durability for a lifetime of hard use. Each socket features chamfered lead INS for quick and easy placement onto fasteners every time. Their polished chrome finish resist rust and corrosion and easily wipes clean of oil and dirt.Made of drop-forged chrome vanadium steelMade of drop-forged chrome vanadium steelSilverMetric