The Wera bit set bit Safe 61 BiTorsion 1 is a compact 61-piece bit set. It includes a bit holder Rapidaptor 1/4 "with quick-change chuck, 49 BiTorsion bits for long life, in diamond-coated version (BDC) for a secure fit in the screw, tough and hard (BTZ), for universal use, extra hard (BTH) and 11 bits, tough and hard (Z), for universal use. the BiTorsion system ensures longer service life by the hardness of the shaft opposite the output peak is reduced by about 20% by a targeted tempering process. This torsion zone absorbs higher loads. When BiTorsion holder accepts the integrated torsion smaller on loads. the set contains 11 bits with diamond coating to reduce the risk of slipping. The tiny diamond particles bite formally working in the screw. The set is supplied in a surface-protective textile Box. The compact textile box leads to an unexpected relief in the mobility and the space requirement. The significantly reduced weight of a sentence makes carrying much Wonderful Little. Sensitive surfaces are protected during storage. Even the down traps survives the textile Box plus tool without prejudice.