Application: Suitable for 1/4" DIN ISO 1173-C 6.3 and E 6.3 hexagon socket insert bits and Wera Series 1 and 4 Design: Attachment, telescopic, Rapidaptor rapid-in, rapid-out, rapid-spin, chuck-all and single-hand technology Handle: Kraftform with non-roll feature, multi-component, integrated magazine | Wera 7-Piece Kraftform Kompakt 26 Interchangeable Screwdriver Set