Holimax Dry Diamond Drill Bits Set - 1/4" 6mm Granite Marble Porcelain Tile Ceramic Stone Glass

Package Includes: 10 Pieces of Dry Diamond Core Drill Bits Kit for drilling holes diameter of 1/4 inch(6mm), Sufficient quantity to meet your needs Apply to: Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick, Note: not for wood Dry Drilling Design: Diamond Drill Bit made of carbide and integrated with wax lubricant inside, which can melt while dry drilling and cool the cutting surface; Water can be used as additional cooling to prolong the life of the bit Wide Compatibility: Diamond coating enhances the drilling speed; Round Shank compatible with most machines such as Hand Drill, Angle Grinder, Bench Drill; Depth mark is also useful for precise project Easy to Carry: This Diamond Drill Bits set comes with a portable storage case for convenient use and store.