PUMPKIN Holographic diamond drill hole 4 mm.

Made of Industrial Diamond # 46
Suitable for piercing tiles, marble tiles, ceramic tiles, marble and granite.
During drilling, water is required.
Should be used in conjunction with pilot drilling equipment. And the water cylinder.
The flower core is semi-hexagonal shape. The drill is better than the spindle.
From a size of 16 mm upwards, there is a hole in the hole for easy removal of the tile.

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