kraftform 100 wera 057460 screwdriver set of 52 pieces52 piece set; They come in a compact textile box that protects delicate surfaces and is highly robust. The set is characterized by a very low volume and weight which provides better mobility. This is a compact tool set with 52 screwdriving tools. 1 Rapidaptor manual bit holder with quick change system; 1 Rapidaptor B bit holder with quick change system for insertion into the screwdriver machine or connection to the electronic drill; 30 BiTorsion bits