Manufactured for professional-level performance, the V-Series™ 3/8 in. Drive Metric X-Tract Technology Hex Bit Socket Set features an innovative fastener gripping design. Built with X-Tract Technology, these hex bit sockets are geometrically designed to extract fasteners that are up to 50% rounded without inflicting damage to the fastener. Ideal for everyday use, they are also designed to prevent future rounding when tightening and loosening fasteners.