* 【materials] diamond drill bits are made of industrial grade carbon steel and sintered diamond . Fine workmanship and super wear-resistant, sharp
* 【 Sizes】 drilling diameter 12mm, 13mm, 14mm, 15mm, 16mm, other size can be customized as per your drawings
* 【Wide Usage】Used on Drilling/ grinding/ milling Glass,Tile Bottles,Blocks Jars, Ceramic,Slate Mable, Granite Light Stone, and other hard surfaces
* 【Attention】Please keep adding water when the diamond drill bits are working on the glass or ceramics.low drill pressure and
increased use of water lubrication will extend drill bit life.
* 【 Sizes】 drilling diameter 12mm, 13mm, 14mm, 15mm, 16mm, other size can be customized as per your drawings
* 【Wide Usage】Used on Drilling/ grinding/ milling Glass,Tile Bottles,Blocks Jars, Ceramic,Slate Mable, Granite Light Stone, and other hard surfaces
* 【Attention】Please keep adding water when the diamond drill bits are working on the glass or ceramics.low drill pressure and
increased use of water lubrication will extend drill bit life.