Brazed Diamond Countersink Core Bits

Built with advanced vacuum brazing technology; Tapered diamond rim for countersink hole preparation; 5/8"-11 female thread; Material: Porcelain Tile, UltraCompact Surfaces, Marble, Engineered Stones, Granite, Natural Quartzite; Dry or Wet use. Perfect for Integrated Sinks Available in the Following Sizes:  1-1/2", 1-3/4", 2", 3-1/2" CORE BIT DIAMETER TAPERED RIM DIAMETER MAX. RPM 1-1/2" 2-3/8" 4,000 1-3/4" 2-9/16" 4,000 2" 2-3/4" 4,000 3-1/2" 4-7/16" 3,500