3-Inch Diamond Core Drill Bit – Shark-Style 1-1/4"-7 Thread Wet/Dry Core Bit for Cured Concrete with Rebar, Hard Masonry, Brick, Block, Stucco & Stone

Meet the high-performance 3 Inch Diamond Core Drill Bit — a rugged, precision-engineered solution built for professionals tackling cured concrete with rebar, hard masonry, brick block, stucco, and natural stone. With its 1-1/4"-7 standard thread, this Shark-style core bit delivers universal compatibility across leading handheld and rig-mounted core drill systems. Its 4-inch outer diameter and 15-3/4" (400mm) drilling depth provide deep, controlled penetration — while the advanced concentric axis design and aggressive diamond grit ensure smooth, fast, and vibration-resistant operation. Whether you’re installing air conditioners, running pipes, or securing railings, this bit adapts seamlessly: use wet drilling for peak longevity on tough substrates, or switch to dry mode for lighter masonry tasks. Built for durability, engineered for precision, trusted on job sites — this is the go-to 3 Inch Diamond Core Drill Bit for contractors who demand reliability, speed, and flawless results — every time.

• Precision Diamond Grit Cutting: Engineered with premium diamond segments for sharp, consistent, and vibration-free drilling in cured concrete with rebar, hard masonry, brick block, stucco, and natural stone — optimized for maximum efficiency and extended service life.
• Universal 1-1/4"-7 Standard Thread Compatibility: Features industry-standard 1‑1/4‑7 threaded shank that fits most handheld core drills and dedicated core drill rigs — ensuring stable, reliable performance across heavy-duty construction and renovation applications.
• Optimized Wet or Dry Operation: Supports both wet and dry drilling modes; start at 15° angle then go vertical for smooth entry — water cooling significantly extends bit life, while dry use remains effective on softer masonry and tile.
• Human-Centered Structural Design: Incorporates precisely engineered concentric axis alignment and shark-inspired sawtooth geometry to enhance drilling stability, reduce wobbling, and deliver clean, burr-free holes in demanding materials.
• Versatile 3-Inch Core Drilling Solution: Ideal for HVAC (AC ducts), plumbing (pipe penetrations), stair railings, electrical conduits, and structural anchoring — excels in reinforced concrete, stone, stucco, brick block, and hard masonry surfaces.