SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws

1pc core bits and 1set polishing pads

• Designed for drilling hard granite, marble, engineering stone, concrete, brick
• Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities
• Dry or Wet Drilling - use wet will greatly prolong the segment life
• Designed for polishing Granite/Marble/Stone/Quartz/All similar material.When polish artificial stone,eg: quartz, suggest to add water so that can get good polishing performance.
• Easily operate on 5/8"-11 Angle Grinder; Need an adapter for drill or other machine, such as SDS,hex,Round plus shank