The bits are crafted from S2 alloy steel, offering exceptional hardness and durability, while the Chrome-vanadium (Cr-V) sockets deliver superior torque for powerful turning force. This 3/8-inch drive extra-long hex bit socket set includes the following Sae sizes: 1/16"", 1/8"", 5/32"", 3/16"", 7/32"", 1/4"", 5/16"", 3/8"", 7/16"", and 1/2"". The extended design allows for easy access to confined or recessed work areas. Precision-chamfered bit tips ensure smooth insertion. Size markings are large, clear, and stamped directly onto the tools, ensuring easy identification and permanent legibility. A rugged blow-molded storage case is included for convenient portability. Weight: 2.6 lbs.