10 pieces With 9 PH2 1/4 inch bits with a narrower fit for dry walling and a bit holder.
Prevents the bit from jamming in the screw e.g. Drywall screw
Special profile for dry walling
Screw depth can be infinitely adjusted and allows screws to be countersunk flush
Optimised spacer bit holder
Easy bit removal
Bit box with tilt function
