Application:Suitable for bits with 1/4" external hexagon drive as per DIN ISO 1173-C 6.3 and E 6.3 and Wera connection series 1 and 4 Design:Ratchet with fine toothing integrated in the handle (36 teeth, return angle 10°); 1/4" hexagon with Rapidaptor rapid-in, rapid-out, rapid-spin, chuck-all and single-hand technology, magnetic Handle:Kraftform with anti-roll protection, multi-component