The DeWalt 1/4inch Impact Right Angle Attachment is designed for screwing and drilling, primarily for trade professionals. It is best used for accessing tight spaces and difficult-to-reach areas. It can be used with impact drivers and cordless drills. Key features include: Ultra-compact design for easy attachment, patented handle design that reduces vibration for added control and comfort, long-life gears that are impact-ready for durability, a 38mm head depth for ultimate accessibility, a rare earth magnet for retaining fasteners for easy one-handed use, and a metal gear case with quick bit ejection for durability and convenience. Supplied as a single unit.