DeWalt DW5223B25 DeWalt 3/16 x 6 Drill Bit Premium Percussion (Bulk 25)

Using these DeWalt drill bits is easy. First, select the right drill for the job and make sure it's set to the appropriate speed. Insert the drill bit firmly into the chuck until the three flats on the shank lock it in place to avoid slipping. When you start drilling, apply steady pressure. The four - flute design will help clear debris as you go, so you can drill faster and more efficiently. As for maintenance, after each use, wipe the drill bit clean to remove any debris. Store it in a dry place to prevent rust. Remember, the ROCK CARBIDE tip gives the bit a long life, but don't use it on extremely hard materials that could damage the tip. If you notice the bit isn't drilling as well as it used to, it might be time to replace it.