Kraftform Kompakt 100 KK. 52-piece kit. 1/4" drive. Comes with a bit holding screwdriver with Rapidaptor and a Rapidaptor quick-release bit chuck. With L-keys for hex socket head bolts and selection of color coded bits for Phillips; Pozidriv; Torx®; slotted and hex. Bits come as 25mm long BiTorsion or in 50mm long Impaktor making it a high quality and comprehensive but small packed kit. Packed in a robust textile fold-up pouch with hook and loop on the rear side. - BiTorsion bits are absolute premium bits. The tip is hardened steel but the BiTorsion zone in the shaft is softer. The peak loads of impact drivers; prone to break hardened bits; are absorbed. This makes the BiTorsion bits tougher and more resilient for a longer service life. - Impaktor bits are compatible with impact drivers and reduce the risk of bit breakage due to the special tempering process. The diamond coated screw head bites into the screw; preventing slip-out; requiring less pressure and reduces fatigue. Kit contains: Series 813 R - Bit holding magnetic screwdriver. 1/4" drive x 90mm long magnetic bit holding screwdriver with incorporated Rapidaptor quick-release bit chuck and multi-component handle. Takes 1/4" hex bits as per DIN ISO 1173-C 6.3 and E 6.3 and Wera series 1 and 4. Series 889/4/1 K - Rapidaptor Quick-Release bit chuck. 1/4" drive x 50mm long. Compatible with all 1/4" insert bits and the longer power bits. The bit holder mechanically holds bits tight thr