CRAFTSMAN V-SERIES Hex Key Allen Set, MM, 9 Piece (CMHT26139V) Craftsman V-Series tools are designed to professional specifications bringing tool truck quality within reach. With patented X-Tract technology, removing rounded or rusted fasteners just got easier. The Craftsman V-Series 9pc X-Tract Metric L-Key Set is designed to remove fasteners up to 50% rounded, while also helping to prevent rounding or stripping of new fasteners. The X-Tract 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 a ball-end that provides angled access to hidden or hard to reach fasteners.This set includes 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm. 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 ACCESS - Ball-end offers angled access to hidden or hard to reach fasteners 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.