KURSTOL Diamond Core Drill Bits - 1-1/2 Inch with 58-11 Thread Granite Hole Saw Dry or Wet Drilling Hard Stone Marble Concrete Quartz Countertop Laser Welded Masonry Coring(38mm) - K2001038203

• 【Package Includes】1pc Diamond drill bit:Diameter 1-1/2",Thread: 5/8"-11,Total length:4", Drilling depth:73mm Diamond Height 10mm,Diamond Grits 25/35. 【4 Turbo style Diamond Segments】Laser weld technology,by allowing air and water(when run wet) do get in the segment while drilling as well as channel the dust out to help cut and core faster. 【Vacuum Brazed Diamonds on the outside Core Design 】Offers clean cut & steel core protection. to help with the drilling process by hand.and if you need to make the hole just a little bigger and to clean up the hole as well. 【Application】Recommended Materials: Granite, Quartz, Quartzite, Marble, Engineered Stone and other stone. 【Machine】Widely used in Angle Grinder.Recommended 6000 RPM,Max 10000,Use: Dry or Wet