Klein Tools KNECT™ Deep-Well 3/8-Inch Drive Impact Socket Set, Metric, 9-Piece 65109IMPCTM

This 9-piece metric deep-well impact socket set is built for tough jobs, featuring the most common sizes up to 21 mm. Sockets offer superior access for hard-to-reach areas, while stamped size markings with white in-fill and color-coded rings ensure quick identification. Made from heat-treated Cr-Mo steel, these sockets withstand extreme torque. Includes two adapters and a MODbox™ accessory case for compact, modular storage.