Calidad 3/8” (10mm) with a 5/8-11 thread finger milling bit for enlarging, shaping and/or rounding existing holes
Vacuum Brazed Diamond Technology - heavy duty & wear resistant; much better than electroplated ones, provide very high efficiency, cuts faster, durable and sturdy;
Details - Diamond coating enhances the drilling speed
Dry Drilling Design - Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface; Water can be used as additional cooling to prolong the life of the bit.
Worry Free & Assistance -- If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service
Not designed to make holes, but to shape and enlarge existing holes.
I love this thing, I want one of everything that Calidad has! The quality is top notch and it's super affordable. I have tried other products that were more expensive but still chipped the **** out of porcelain tile, not with this product. I will be buying all of my diamond blades and bits from Calidad from now on.