Super Primalloy Drill Set For Taps
Features:
• A NECESSITY FOR ANYONE THAT USES TAPS - Contains every special size drill needed for use with taps from 4-40 thru 1/2 (taps not included).
• TAP-DRILL CHART IN INDEX - Identifies which drill bit to use with each tap size.
• AVOIDS COSTLY DOWNTIME - A drill that is even 3/1000ths too small can result in broken taps. A drill bit that is oversize can result in weak threads that are prone to failure. Both can result in costly equipment downtime. Selecting the correct drill bit will create stronger threads and avoid breaking the tap in use.