DeFusco is delighted to give you the best selection and lowest prices on diamond drill bits for grinders. Designed to fulfill personal and professional needs, we have a variety of drill bits suitable for most solid materials. Whether needed for granite, porcelain or marble, we can provide a perfect match for the job. We proudly carry Diamante Italia and Slayer Diamond products because they manufacture the highest quality diamond drill bits. Regardless of the project, we have the tools to get it done. Diamond drill bits increase profitability for industries that use portable routers to finish hard surfaces. Bullnosing granite and marble countertops are a popular use for diamond drill bits. Defusco carries various shapes and sizes of drill bits, perfect for both common and unique projects. If we don’t carry what you need, contact us and we will find it!