High grade steel torx key set with wera39s torx holding function hf the holding function securley holds the screw in place preventing legnthy searches of lost screws torx hf was developed by wera optimising the geometry of the origional torx profile resulted in a tip that would positivly grip the screwhead made from round bar with machined ends for a precision fit and extra stregnth high corrosion protection due to the blacklaser surface treatment the practical rubber clip keep the ke