Electroplated diamond back bolt drill bits
Diamond back bolted  drill bit
Electroplated diamond drill bit
Diamond hole saw

Features:
1. Diameter: 3-200mm
2. Diamond grit: 40# 80# 100#, or upon request
3. Features: 1) smooth drilling surface, high drilling speed, long service life, no broken edges, and not tremors.
  2) suitable for cutting, drilling hard materials, such as glass, ceramics, marble, granite, hard concrete and brick.