Features and Benefits * Impact quality power drive nut setters with a lifetime warranty * 6 piece magnetic nut setters, 8mm, 10mm, 11mm, 12mm, 13mm and 14mm * 6 piece hollow body nut setters, 8mm, 10mm, 11mm, 12mm, 13mm and 14mm * Heat treated, cold forged-high alloy steel * Comes in a plastic storage case with parts list 12 piece set includes 6 magnetic nut setters and 6 hollow body nut setters. Most complete set of nut-setters anywhere. Impact quality drivers that can be used with hand drivers or todays new cordless quick change Impact drivers. 1/4" Hex power drive shanks and bits are 2-9/16" long.