【Good Material】Electroplated Diamond Hole saw set are made of carbon steel and coated with nickel to resist corrosion. Diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.

【Different Sizes】Electroplated Diamond hole saws contains: 5mm-180mm.These diamond hole saw drill bit set contain different sizes of diamond bits to meet your different drilling needs and improve your work efficiency.

【Hollow Cut Out】The large clearance holes on the diamond drill bit help water cool and flush swarf and other particles from the drill hole,ensuring smooth cut and speed up drilling. When debris gets stuck in the diamond hole saw,the clearance holes allow you to use the screwdriver to pry it out.

【Versatile】Electroplated Diamond hole saw and guide set suitable for use on smooth surfaces such as tile, ceramic, glass (except tempered glass), marble, granite and terrazzo. to help you with home modification, wine bottle craft, glass or porcelain pot modification. No matter you are a DIYer or family handyman, this set is all you need. It will be your good helper.