The ToughCase+ system is a connectable case system designed to optimize storage space and keep your bits organized. The bit-bar design allows for easy bit removal and the clear lid allows you to see inside at a glance. DEWALT Max Fit Screwdriving bits help maximize your DEWALT power tool system. Featuring the 10X Magnetic Screw Lock System, the maximum fit 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.