• Diameter：40mm
• Total Length：62mm
• Segment Height：15mm
• Thread：M14 or 5,8"-11
• Technology：Vacuum Brazed
• Application：Wet Drilling or Dry Drilling
• Delivery Date：15-20days
• MOQ：20PCS
• Transport Package：Aluminum Box Packaging
• Specification：40MM
• Trademark：Johnson Tools
• Origin：China
• Production Capacity：10000PCS,Month

Product NameVacuum Brazed Diamond Core Drill Bits for PorcelainSize40mmConectionM14 Thread (5/8"-11 thread)Total Length62mmSegment Height15mmApplicationPorcelain, Ceramic, TileFeatures1. Vacuum Brazed Diamond Core Bits are very aggressive ideal for drilling ceramic and porcelain tiles  with super high precision while leaving smooth edges with minimal chipping.
2. Vacuum brazed technology is superior to electroplating in that the bits last much longer than electro-plated diamond bits.
3. They can typically drill more than 30 holes although life is dependent on type of material.