A 38-piece bit set built for the demands of impact drivers, not just standard drills. DeWalt's Impact Ready line uses a black oxide finish and engineered shank geometry to hold up under the sudden torque spikes that snap ordinary bits, so this set is meant for the guy who reaches for an impact driver as his default tool, not the occasional weekend project.With 38 pieces in the assortment, you get a wide spread of drive types and sizes packed into one clamshell case, so whatever fastener you run into on a job - framing, decking, cabinetry, mechanical work - there's a good chance the right bit is already in the box. The quarter-inch hex shank fits standard impact drivers and drill/drivers alike, and the magnetic tips help hold screws in place and steady on the bit, which matters when you're working overhead or in tight spots.Good fit for contractors, tradespeople, and serious DIYers who put their tools through real use and don't want to keep restocking stripped or snapped bits. 38-piece screwdriver bit set DeWalt Impact Ready sub-brand, engineered for impact driver torque Black oxide finish for durability 1/4 in. hex shank, magnetic tips Assorted sizes, clamshell packaging Weight: 2.4 lbs