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Made of high strength and quality corundum powder of diamond sand and carbon steel with smooth nickel plated surface coating to ensure durability of usage;
Easy, quick and smooth drill for hole; enhance the drilling speed to ensure a sharp, high precision and smooth cut without a broken edges in seconds;
Capable of drilling into extremely hard materials such as marble, slate, glass, tile, stone and many more.
The material needs only water for lubrication. DON'T DRILL HOLE WITHOUT WATER!
These drill bits can be used with a standard drill, excellent for making clean and accurate holes, with both good performance and long life.
Please keeping adding water while drilling hole to ensure the bit keeps cool. Using speed under in 800-1000 per minute.
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed in the pictures.
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Estimated delivery time 8-16 business days