The PorcelainPlus Speedbit® is a tungsten carbide-tipped, spear point glass/tile drill bit that was specifically designed for drilling quickly and efficiently through porcelain, glass, and other hard surfaces for a variety of applications. Its speed and durability distinguish itself from other standard carbide bits. With a specially formulated mix of metals and superior designed carbide tip, the PorcelainPlus Speedbit® makes installations quicker and easier, therefore, more profitable. For more info visit https://porcelaindrillbit.com