Hitachi 799961 Drill And Drive Bit Set, 50-Piece (Discontinued by manufacturer) Includes masonry, Brad point, titanium and spade drill bits Includes Phillips, slotted and square driver bits DuraCore treatment strengthens the molecular structure of the bits for super strength The perfect bit set to accompany your Hitachi Power Tools Comes with a 30-day limited warranty The perfect 50-Piece bit set to accompany your Hitachi Power Tools 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 The quick-change chuck allows you to change bits easily Comes with a 30-day limited warranty