Wera Bit-Safe 43 Universal 1 Comprehensive Standard Bits and Holder Set in Pouch for drill/drivers with Stainless holder is designed for compact and organized tool storage. Included are 25mm and 50mm direct drive Torsion (TZ) bits. Utilising a unique combination of special material, hardening and precision manufacture, TORSION bits are designed to prevent premature wear for improved service life. EXTRA-TOUGH (Z) bits are suited to hard metal jointing, threaded fasteners and general use including timbers. With slim Stainless Universal bit holder with ring retention for insert and power bits. Wera Bit-Checks feature a compact design to safely store bits in a case that provides fast and easy tool selection. So slim it can fit into your pocket. Sorted by drive and size, tools are easy to locate and return to proper position, making missing products easy to identify.