Wera 05057111001 kraftform kompakt 71 security bit holder 30 piece bit set wera 05057111001 this set from wera includes a kraftform handheld bit holder with quick release chuck and a universal rapidaptor bit holder as well as 30 bits to tackle a wide range of security screws the set contains both a hand driver and machine adaptor for maximum versatility wera 05057111001 kraftform kompakt 71 security bit holder 30 piece bit set