The Wera Bit-Check 12 Wood 1, with RingMagnet Rapidaptor is a long life bit set which is designed for compact and organised tool storage. Utilising a unique combination of special material, hardening and precision manufacture, Torsion bits are designed to prevent premature wear for improved service life. The bits are designed for driving screws into normal construction timbers and materials. Through-hardening creates a much harder wearing bit. The clever RingMagnet Rapidaptor bit holder holds up to 8in (200mm) screws securely in place and acts like a third hand. This is ideal for overhead and repetitive screwdriving or driving screws into recessed areas. The RingMagnet Rapidaptor features a handy 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-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. Sorted by drive and size, tools are easy to locate and return to proper position, making missing products easy to identify. This 12 piece set contains the following:1 x 1/4in x 52mm RingMagnet Rapidaptor Universal bit holder4 x Torsion 25mm Pozidriv bits: PZ1, PZ2 (x2), PZ3.1 x Torsion 25mm Phillips bit: PH2.6 x Torsion 25mm TORX® bits: TX10, TX15, TX20, TX25, TX30, TX40.