CRAFTSMAN V-SERIES Hex Key Allen Set, SAE, 9 Piece (CMHT26162V) Craftsman V-Series tools are designed to professional specifications. With patented X-Tract Technology? , removing rounded or rusted fasteners just got easier. The Craftsman V-Series? 9pc X-Tract Technology? SAE T-Handle Set is designed to remove fasteners up to 50% rounded, while also helping to prevent rounding or stripping of new fasteners. The X-Tract Technology? grooves in the tip create additional engagement points for gripping and help to release stress on the interior of the fastener as you turn. Each key is also manufactured from premium S2 steel for strength and durability, with an ergonomic, over-molded handle for additional grip in high torque applications. This set includes 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8" Features EXTRACTION - X-Tract Technology designed to remove fasteners up to 50% rounded ROUNDING PREVENTION - Designed to help prevent rounding and stripping of new fasteners DURABILITY - Premium S2 Steel for advanced strength and durability TORQUE - Ergonomic T-Handle adds grip for high torque applications 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.