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Your cart is empty.Transform your kitchen renovation projects with this professional-grade diamond drill bit set designed specifically for quartz, marble, and stone countertops. The set includes three precision-engineered bits in 0.79", 0.98", and 1.38" sizes, perfect for creating sink drain holes and basin openings. Each bit features a unique 60-degree bevel design and vacuum-brazed diamond grit coating (#35/40 and #80/100) that ensures clean, precise cuts through hard surfaces. The bits measure 2.56" in total length with a 0.3" diamond-coated rim thickness, providing optimal cutting depth for most countertop applications. The 5/8"-11 threaded connection ensures compatibility with standard power tools. These durable blue-coated bits are specifically engineered for wet drilling applications, helping achieve professional results in kitchen and bathroom installations. For best results, use with proper cooling and at recommended speeds for your specific material.
