1.Made from high quality, hardened 50# Carbon steel for added durability,enabling them to be suitable for soft and hard wood, plasterboard, aluminum ceiling, thin metal sheet.

2.Optimized Variable pitch and positive rake tooth design, provides powerful and efficient cutting.

3.High precision, smooth cutting edges, especially impact resistance, wear resistance, cutting perfectly smooth round hole.

4.Pilot bit with 118o split point for fast, skate-free penetration.

5. Increased wall thickness improves durability and minimizes tooth loss.

6.The wide slots placed low on each hole saw and multiple leverage points to make it easy to work plugs out with a screwdriver.

7.Black oxide finish to prevent rust.Color Painting is available.

8.For use with corded and cordless drills.