The Wera Bit-Check 30 Diamond 1 with Rapidaptor is designed for compact and organised tool storage Utilising a unique combination of special material hardening and precision manufacture Bi-Torsion 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 Its spin sleeve allows the steadying of the screwdriving BiTorsion Diamond Coated BDC bits ensure safe working especially driving screws into delicate materials or high-quality surfaces preventing slip 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 the tool and ensures screws are fully driven home Wera Bit-Checks feature a compact design to safely store bits and bit holders in a case that provides fast and easy tool selection It is so slim that it can fit into your pocket Drive and size are colour coded for easy selection of the right bit This 12 piece set includes the following 1 x 14in x 50mm Rapidaptor Universal bit holder 7 x BiTorsion 25mm BDC Phillips bits PH1 x2 PH2 x4 PH3 7 x BiTorsion 25mm BDC Pozidriv bits PZ1 x2 PZ2 x4 PZ3 12 x BiTorsion 25mm BDC TORX bits TX10 x2 TX15 x2 TX20 x3 TX25 x3 TX30 TX40 3 x BiTorsion 25mm BDC Slotted bits 55x08 55x10 and 65x12mm Suitable for use with drilldrivers; for impact machines use IMPAKTOR