Feature:
Coated with high quality diamond to improve drill efficiency and creates a sharp, high precision and smooth cut.
The end of this drill bit is grooved, so the diamond coating has better adhesion .The large cut-outs at the sides and the top to facilitate the entrance of cooling water and eject the scrap, for longer life.
Wide Application: glass bottles, porcelain ceramic tiles, plant pots, fish tanks, quartz, granite, and marble.
Please Note: When cutting, be sure to constantly refill the hole saw with water to avoid premature wear of the material being drilled and the tool, while drilling at a slow speed. This will extend the Lifespan of the diamond drill bit.

Specification:
Product Name: Diamond Coated Hole Saw
Material: Diamond and Carbon Steel
Cutting Diameter: 4mm / 0.16”
Total Length: 50mm / 1.97”
Shank Type: Round Shank

Package Included:
12Pcs x Diamond Coated Hole Saw