Kraftform Kompakt 20 RA-RApplication: 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, intuitive switching, use position 0 to deactivate the ratchet mechanism for precise working; 1 4" hexagonal bit mounting, magnetic; connector, telescopic blade, Rapidaptor technology with rapid in, rapid out, rapid spin, chuck all and single hand functions.