About This Add Versatility to Your Tool: 5 Pieces of Dry Diamond Tipped Drill Bits Kit for tile drilling holes with diameters of 1/4 inch(6mm), 5/16inch (8mm), 3/8inch (10mm) and 1/2inch (12mm); Diamond Coating: Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick 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 Unique Details: Diamond coating enhances the drilling speed; Round Shank compatible with most machines such as Hand Drill, Bench Drill; Side flutes help to remove debris and drill holes smooth and fast; Depth mark useful for precise project Worry Free: This Diamond Drill Bits set comes with a portable storage case for convenient use and store. If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service Overview Material : Diamond Cutting Diameter : 12 Millimeters Finish Type : Diamond, Smooth Shank Type : Round Cutting Angle String : 45 Degrees
