DaduoRi 1 Inch Concrete Hole Saw Masonry Diamond Drill Bit with 2" Cutting Depth, for Hard Stone Brick Marble Granite Concrete Clinder Block, Wet or Dry Use, 25mm - DaduoRi Tool, DaduoRi 1 inch granite hole saw-025

• Professional concrete hole saw, 1 inch diameter. Tool life(for reference):10 to 20 holes with water in marble. 1 inch diamond hole saw for concrete, 3/8" shank, fit most electric drills. Not used in hammer drilling. Increases hole saw body height, up to 2 inch for deeper cuts. Good 1" granite countertop drill bit. Whether used dry or wet, adding water helps to cool the drill bit, increase the opening speed and extend the life of the bit. 1 in granite drill bit performs well on marble,concrete,masonry,porcelain,ceramic,granite,pavement,brick,stucco,basement walls,cinder block and other stones. If you want to drill tiles or need to with a center pilot bit, you can also find it in our brand.