Wera 838 RA-R Bitholding Ratcheting Screwdriver. Bitholding screwdriver with a 36-tooth ratchet mechanism (10 return angle) for fast reposition-free screwdriving. Ergonomic handle with intuitive switching between clockwise counterclockwise and neutral. Magnetic bitholder fits 1/4″ hex bits (DIN ISO 1173-C 6.3 and E 6.3). Rapidaptor quick-release chuck for easy bit changes. Prevents blisters and calluses.