CRAFTSMAN V-SERIES Socket Set, Hex SAE, 3/8 Inch Drive, 6 Piece (CMMT17700V) Manufactured for high performance, the V-Series 3/8 in. Drive SAE X-Tract Technology Hex Bit Socket Set is the model choice for fastener gripping applications. These hex bit sockets are geometrically designed to extract fasteners that are up to 50% rounded without inflicting damage to the fastener with built-in X-Tract Technology. They are perfect for everyday use and, in addition to extraction, their geometry helps prevent future rounding while tightening and loosening fasteners. Features HELPS PREVENT ROUNDING AND STRIPPING of new fasteners with X-Tract Technology MULTI-APPLICATION VERSATILITY: Dual-use design for utility on rounded and un-rounded fasteners HIGH DURABILITY FOR LONG LIFE: Full-polish chrome helps resist rust and corrosion BACKED BY A LIFETIME WARRANTY: Designed to deliver the quality and durability expected from the CRAFTSMAN brand - if the product fails to perform,we will replace it USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.