Phillips Bit Chart
Point #0 - For Screws #0 & #1
Point #1 - For Screws #2 Thru #4
Point #2 - For Screws #5 Thru #10
Point #3 - For Screws #12 Thru #16 & 1/4"
Point #4 - For Screws 5/16" or 18 and Larger