Living up to the reputation of the brand, GEARWRENCH® chrome bit sockets deliver unprecedented speed, strength and access to almost any job. Large, hard stamped markings allow for easy identification and can be easily recognized as SAE (double line) or metric (knurled line). Available in standard, mid and long bit lengths, the chrome hex bit sockets include the most commonly used sizes. The bits are manufactured from S2 steel to the highest tolerances to guarantee a precise fit. GEARWRENCH® sockets will get the job done. GEARWRENCH® Bit Socket Set, Professional, Measurement System: Metric, 10 Piece, 3/8 in, 1/2 in Drive, 4 to 17 mm Hex, Specifications Met: ASME B107.5M, Full Polished Chrome