The Wera Bit-Safe 61 BiTorsion 1 is a comprehensive set of Torsion bits and a Rapidaptor holder set supplied in a pouch It is designed for users on the move needing a broad selection of drive profiles with multiples of the same bit 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 Their patented Torsion zone absorbs peak stress loads that normally destroy bits 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 Extra-Tough BTZ bits are suited to hard Metal Jointing threaded fasteners and general use Gold Extra Hard BTH bits are designed for driving screws into normal construction timbers and materials 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 Wera Bit-Safes feature a compact design to safely store bits and bit holders in a handy structured fabric case; the tools are easily accessed Drive and size are colour coded for easy selection of the right bit This 61 piece set includes the following 4 x 25mm BDC Phillips Bits PH1 PH2x2 and PH3 11 x 25mm BTZ Phillips Bits PH1x2 PH2x8 and PH3 4 x 25mm BDC Pozidriv Bits PZ1 PZ2x2 and PZ3 11 x 25mm BTH Pozidriv Bits PZ1x2 PZ2x8 and PZ3 16 x 25mm BTZ TORX Bits TX10x3 TX15x2 TX20x4 TX25x4 TX30x2 and TX40 3 x 25mm BDC Slotted Bits 55x08 55x10 and 65x12mm 11 x 25mm Hex-Plus Bits 25x3 3x3 4x3 and 5mmx2 1 x Rapidaptor Universal Bit Holder