This 99-piece Crescent General Purpose Tool Set features sockets made from chrome alloy steel, which is specially formulated and heat treated for high strength and superior resistance to abrasion and corrosion. Ratchets, sockets, and drive tools all have a flawless chrome finish to extend tool life. The wide selection of Crescent tools satisfies today's rigorous DIYers' and mechanics' tool demands. Crescent is a premier hand tool brand, offering a variety of tools to professional tradesmen and home DIYers looking for quality, durability, and innovative functionality in their toolbox.