An automatic screw supplier is a simple but most effective device which brings screws to pick-up position one after the other.
NFK UNI can be used with any (non-countersunk) screw with diameter 0.06–0.2 in - it's very easy to adjust the rail to the proper screw size. A magnetized bit is required to chuck the screw.
NFK-Nxx/RS (the xx stands for the screw size) delivers one screw at a time to a specific position so that one single screw can be easily picked up when using an autocatcher or suction head. A trimmer on the side panel allows to adjust how fast each screw is supplied. Available in different models for screws with shank diametre from 0.05 in up to 0.20 in.