Hitachi 728698 Screwdriver Torsion Bit Set, 18-Piece (Discontinued by manufacturer) Features Phillips, slotted and square headed bits for a variety of projects and specially designed for impact drivers Hitachi DuraCore treated products are manufactured utilizing a proprietary technologically superior to cryogenic treatment DuraCore is not a coating, so it will never wear off or chip away This kit includes (2) 1-Inch No.1 Phillips bits, (3) 1-Inch No.2 Phillips bits, (2) 1-Inch No.3 Phillips bits, a carrying case plus lots more Comes with a 30-day limited warranty