1 3/8" x 4" Reinforced Concrete Diamond Core Drill Bits for Granite, Stone, Marble & Ceramic
Premium electroplated diamond grit for unmatched cutting precision and extended durability. High-grade steel core with laser-welded segments ensures stability during heavy-duty drilling. Ideal for professionals tackling reinforced concrete, granite countertops, marble flooring, and ceramic tiles. Engineered with advanced cooling grooves to prevent overheating and reduce bit wear. Universal compatibility with standard rotary drills and rigs for versatile job site use. No-taper design maintains consistent bore diameter for clean, smooth holes every time. Optimized for wet or dry drilling—perfect for construction, masonry, and stone fabrication. Industrial-strength performance at wholesale pricing, exclusively for bulk buyers. Stock up on the ultimate core bit solution for hard materials.