Features and Benefits: Forged from high quality Chrome-Molybdenum alloy steel for long lifeEach impact socket features a radius corner design, causing the socket to grab the sturdy wall of the fastener instead of grabbing the cornersPackaged in a durable heavy duty blow mold case for convenient storage and transportFully GuaranteedThis 19 piece 1/2″ drive SAE impact socket set is designed to extend the life of fasteners! Sunex Impact Sockets tackle the toughest jobs with solid durability that keeps them pounding job after job. This set includes the following sizes 3/8″ to 1-1/2″. Like all Sunex Impact Sockets, the new 2640 is forged from high quality chrome molybdenum alloy steel. The standard depth socket sizes contained in the 2640 range from 3/8 in. to 1-1/2 in. . All Sunex Impact Socket Sets are packaged in a heavy duty blow mold case and are backed by a lifetime warranty. WARNING: This product can expose you to Nickel (Metallic) a chemical known to the State of California to cause Cancer. For more information go to www.P65Warnings.ca.gov.