Bit-Check 7 Diamond 1 Set, 7 Piece - Wera 05073419001, The Bit-Check 7 Diamond 1, with Rapidaptor is designed for compact and organised tool storage. Utilising a unique combination of special materials, hardening and precision manufacturing, BiTorsion bits are designed to prevent premature wear and dramatically extend service life. The patented Torsion zone absorbs peak stress loads that normally destroy bits. The holder with quick-release chuck offers press-in auto-lock and rapid one-handed bit changes for insert and power bits. The holder spin sleeve allows the steadying of the screwdriving. BiTorsion Diamond Coated (BDC) bits ensure safe working, especially when driving screws into delicate materials or high-quality surfaces, preventing slipping. Additionally, where screws are driven into resistant materials such as hard woods, concrete screws and ABS plastics Diamond Coated bits 'bite' into the fastener, ensuring a secure fit and reducing cam-out effect. This extends the life of