Versatile Glass Drill Bit Set: This 5-piece glass drill bit set includes sizes 5mm, 6mm, 8mm, 10mm, and 12mm, designed to handle a wide range of materials such as porcelain tile, marble, granite, and even sea glass. Whether you're making jewelry, drilling ceramic tile, or cutting stone, these diamond-tipped glass drill bits deliver precise, clean cuts with minimal chipping or damage in a variety of applications. Vacuum Brazed Diamond Drill Bit: Each diamond drill bit is manufactured with vacuum brazing technology, ensuring a strong bond between the diamond drill bit and the shank. This provides better strength and longer cutting life. The cutting edges are reinforced with industrial-grade diamonds, allowing these diamond concrete drill bits to cut through the hardest materials while resisting premature wear or thermal deformation. Dry drilling and improved cooling: These drill bits are designed for dry drilling, thanks to an internal wax core that melts as you drill to cool the bit