Screwdriver Tip Profiles
Tip profiles are shown below to help identify and select the type of screwdriver required.
Screwdrivers Tips For Recessed Head Screws
These were originally produced in four sizes (point size 1 the smallest, point size 4 the largest), but three smaller sizes (0, 00 and 000) are now available for electronic and instrument work. A number of tips are available:
It should be noted that Phillips - the original is now diminishing in use
Pozidriv being introduced to provide a more positive fit
Supadriv has been introduced as an improvement to Pozidriv