Diameter 6mm: 5/8"-11 thread, total length 60mm; diamond height 10mm; max working depth 35mm; Grit: #35/40. Dry or wet drilling for porcelain tile,ceramic, granite, marble, stone, ect. Recommend Machine: 5/8" arbor angle grinder. Recommended RPM:6000. Maximum RPM:11000.If you fit them on hand drills, you need an adapter, such as SDS, hex, Round plus shank, etc.Do not use hammer mode. Vaccum brazing technology enables a strong bond between diamond, bond and substrate, greatly improving tool life and machining efficiency. Fast and smooth drilling and less chipping. Wax inside for cooling the bits. Product Name: DT-DIATOOL Diamond Core Drill Bits Tile Hole Saw for Porcelain Ceramic Tile Marble Granite Masonry Stoneware
Quantity: 2pcs
Specification:
Core bits: Diameter 6mm: 5/8"-11 connection, total length 60mm; diamond height 10mm; max working depth 35mm; Grit: #35/40. Application:

Wide application for porcelain ceramic tile granite marble stone masonry brick.
Feature:
1.Dry or wet drilling.
2.Vacuum brazed technology provides much longer working life than electroplated technology.
3.High quality diamond grain provide fast and smooth drilling.
4.Minimizing any breakage and safe for operator.
5.Less chipping, minimizing breakage, less heat generation, better finish quality.