Serplex Glass Tile Concrete Drill Bit Set - Tungsten Carbide 5Pcs 3-7 mm

STURDY AND DURABLE: Made of premium alloy material with fine oxynitriding process strengthen the drill hardness, rust resistance, more durable to use, high imapct loading capacity. Fully polishing, clean and sharp without burrs.. 7 DIFFERENT TILE DRILLING BIT: 3mm, 4mm, 5mm, 6mm, and 7mm, suitable for your different needs. Each is with a carved size mark on the handle for your convenience. Coming with a drill bit box.. UPGRADE CORSS BIT DESIGN: Upgrade cross arrow design, with smaller incision resistance, provide more stable and efficient drilling performance. Quick and clean drilling can prevent breaking border on materials and creat a neat and clean cut with less chips.. UNIVERSAL COMPATIBILITY: Universal drill bits, can be installed in the general electric hand drill, bench drill, the machine drill clamp range is 10 mm and above.. WIDE APPLICATION: Working perfectly on various materials provides smooth and accurate drilling on ceramic tiles, marble, thin iron plate, mirrors and other crispy material.