DEWALT MAXFIT Steel Screwdriving Set (65-Piece) Precision machined-tip results in less stripped screws65-piece variety set will drive the majority of fastenersPart of 10X magnetic screw lock system for fastener retention which minimizes drops and reduces wobblingS2 modified steel for maximum durabilityIncludes magnetic screw lock sleeve, magnetic drive guide, 1 in. bit tips and 2 in. bit tips