| Size | 40 mm |
| Material | Metal and diamond |
| The Manufacture company | CORTAG |
| The Manufacture Country | China |
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product specification
The hollow glass drill bit is made of high-quality diamond material, which has fast and uniform cutting speed, smooth cutting surface and no wrinkles.
It is used for engraving in many different surfaces, such as marble, stone, porcelain, and granite
Made of diamond
Very suitable for making clean and precise holes

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