The Wera 887/4 RR SB Rapidaptor universal bit holder with ring magnet, 1/4 inch x 57 mm, is a versatile bit holder for fast and efficient work with various screws. Special features: Rapidaptor technology with rapid-in, rapid-out, rapid-spin, chuck-all, and single-hand function. Strong ring magnet holds screws securely in place. Guide sleeve for maximum grip of the screw on the holder. Suitable for bits with 1/4" external hexagon drive according to DIN ISO 1173-C 6.3 and E 6.3 and Wera connection series 1 and 4. Technical data: Drive: 1/4" hexagon, suitable for power tools with a receptacle according to DIN ISO 1173-F 6.3. Length: 57 mm. Included as standard: 1x Wera 887/4 RR SB Rapidaptor universal bit holder with ring magnet.