This Kobalt drill bit is the perfect tool for cutting through materials such as granite, marble, and porcelain. With a diameter of 1 1/4 inches and made from high-quality diamond material, this drill bit is sure to get the job done quickly and efficiently. The item is suitable for use with a variety of tiles and is designed to provide a smooth and clean cut every time. Whether you are a professional contractor or a DIY enthusiast, this Kobalt drill bit is an essential accessory for any tool kit.