The Mueller-Kueps XS Bit Kit is able to work in very narrow areas because of the maneuverable ratchets. The two ratchets can be moved back and forth or sideways and can also be locked once in the desired position. The handle is designed to provide a firm grip without slipping. The kit includes 21 short bits (20mm in length) of various shapes for high versatility and universal use for almost any type of vehicle. All pieces and ratchets come in a sturdy metal box, including an item chart to keep the set organized and well maintained.