The 1/4" Drive, 52-pc, 6 Point, Shallow & Deep, SAE & Metric Chrome Socket Set, No. SK01300-216P, from SK Tools, is made out of heat-treated chrome vanadium steel with SuperKrome high-polish plating for durability and corrosion resistance. The socket sizes include 4mm to 14mm and 5/32" to 9/16", and the tools included are a 1/4" drive 216-position ratchet, 2" and 6" extensions, and a universal joint. The sockets feature a SureGrip drive design that drives the side of the fastener for increased strength and preventing rounding, and each socket has visible size markings and color-coded rings. The set is packed in an EVA foam storage tray.