- Complete set of 5 drill bits: includes 4 diamond drill bits (6/8/10/12mm) and 1 carbide drill bit (6mm) for a wide variety of DIY and renovation applications - Specially designed for drilling hard materials such as ceramic, porcelain stoneware, marble, granite, quartz, and artificial stone - Manufactured with vacuum brazing technology and high-quality diamond grit, ensuring fast, precise drilling and extended service life - The inside of the drill bits contains cooling wax, which helps dissipate heat and remove chips during use - Round shank compatible with most electric, cordless, and bench drills - Can be used dry or wet; wet use increases the durability of the drill bits - Recommended for speeds from 2000 to 5000 RPM for optimal results - Diamond height of 8mm and #50/60 grit for clean and efficient cuts - Easily adapts to angle grinders using a suitable drill chuck