A must have!
Drop-forged chrome molybdenum steel for strength and durability. For use with 1/4" hex or adj chuck drills and impact drivers. Includes 3" & 6", 1/4 " hex to square drive extensions. Sizes: 5/16"/3/8", 7/16"/1/2", 8mm/10mm, 9mm/11mm, 12mm/14mm, and 13mm/15mm double-ended sockets.