MARBLE CORE BIT 1-3/8 INCH VACUUM BRAZED

APEXX Brazed Continuous Rim Core Bit. 1-3/8”. Drilling Depth: 1-3/4”. Attachment: ⅝”-11. MAX RPM: 4,000. Also known as Apexx Brazed Marble Core bits. Material: Marble, Porcelain, Ultra Compact Surfaces, Glass. Drilling depth of 1 3/4" with 5/8-11 thread. Built with sophisticated vacuum brazing technology; Smooth and fast drilling on Marble, Porcelain, Glass and UCS; Last longer than electroplated core bits; Recommended to use with cooling water for long tool life; Material: Marble, Porcelain, Ultra Compact Surfaces; Dry or Wet use.