Stone Plus Dry/Wet Core Bits are professional diamond drilling tools designed for fast and precise hole drilling in granite, engineered stone, and other hard natural materials. Engineered for both dry and wet drilling applications, these core bits provide flexibility for fabrication shops as well as on-site installation jobs. Built with high-quality diamond segments and vacuum-brazed side protection, Stone Plus core bits deliver smooth drilling performance and extended tool life. The diamond protection on the inside and outside of the barrel helps reduce friction and heat buildup while maintaining clean, accurate holes with minimal chipping. These core bits are commonly used by stone fabricators and installers for faucet holes, anchor holes, and plumbing openings in countertops and slabs. Their durable construction and efficient cutting design allow consistent drilling performance even in dense materials such as granite and engineered stone. Key Features Designed for dry or wet drilling applications Vacuum-brazed diamond protection on the inside and outside of the barrel Produces smooth, clean holes with minimal chipping High diamond concentration for fast and efficient cutting Durable construction for long tool life Suitable for professional stone fabrication and installation Applications Granite and engineered stone Marble and natural stone Countertop faucet holes Plumbing and anchor holes in stone surfaces