Greenlee DTAPM4C Drill / Tap Bit M4 x .70

Using the Greenlee DTAPM4C drill/tap bit is a breeze. First, make sure your power drill is set up correctly and the 1/4' quick - change hex shank is firmly inserted into the drill chuck. Select the appropriate material you want to work on, like mild steel, copper, brass, or aluminum, as long as it's up to 10 - gauge thick. Then, start the power drill and let the bit do its magic. It will drill the hole, tap the threads, and deburr/countersink all in one go. When using it, be careful not to over - drill as the back - tapered design helps prevent thread damage, but excessive force can still cause issues. For maintenance, after each use, clean the bit with a soft brush to remove any metal shavings. You can also apply a light coat of oil to prevent rusting and keep it in a dry place. This will ensure your Greenlee DTAPM4C drill/tap bit stays in top condition for a long time.