The DEWALT 3-PC. IMPACT READY® Step Drill Bit Set features 3 innovative titanium step drill bits to power through a range of applications. Each bit is equipped with a split-point tip that helps to increase speed and starts on contact. An innovative double-spiral flute design delivers long life and outstanding chip removal. Laser-engraved numbers helps to increase step visibility. Optimized for impact drivers. Works with rotary drills.