DEWALT MAXFIT Screw driving bits are the perfect way to maximize your DEWALT power tool system. Featuring the 10X Magnetic Screw Lock System the MAXFIT bits are ideal for use in impact drivers and drill/drivers. Each bit features a precision-machined tip for ideal fit in screw head recesses, resulting in less stripped screws. The Magnetic Screw Lock System holders and sleeve feature a floating ring magnet for fastener retention.