Specification: Material: Alloy Steel Body + Diamond + Built-in Cooling Wax Size: 6mm How to Use: 1. 45 degrees of light leaning, the less force the less likely to slip. 2. Keep the speed high throughout and maintain the crescent-shaped positioning slot. 3. Slowly drill vertically. 4. Shake as you drill, this allows for quicker chip removal to increase drilling speed. Package: 10 * Diamond Drill Bits for Porcelain Tiles.
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