The wera 10 piece bit-check bitorsion screwdriver bit and holder set is a compact, professional-grade screwdriver bit set designed for tradespeople who need a reliable, organised selection of bits close to hand on site. At the heart of this set is wera's bitorsion technology, which incorporates a dedicated torsion zone into each bit. This zone absorbs and redirects the kinetic energy generated during peak loads, significantly extending service life compared to standard screwdriver bits. The result is a more durable bit that holds up under the demands of regular professional use. The included 897 4 r rapidaptor holder makes bit changes fast and simple. Bits are attached without the need to actuate the sleeve and removed by a single forward push allowing one-handed operation that keeps workflow efficient on the job. The holder accepts 1 4 hexagon shank bits to din iso 1173-c 6.3 And e 6.3, Making it compatible with power screwdrivers and electric drill chucks alike. The bit-check casing keeps the full set organised and portable, standing upright on the workbench or fitting easily into a shirt pocket. Colour coding by profile and size makes it straightforward to identify the right bit at a glance, reducing time spent searching. This set is well suited to electricians, joiners, and general contractors working across a range of fastener types, covering phillips, pozidriv, and slotted profiles in multiple sizes. Features and benefits: bitorsion bits with torsion zone to absorb ...