Diamond Products 09978 Core Bore 1 Inch Star Blue Wet Diamond Core Bit for Cured Concrete Hard Materials 5/8-11 Thread 13 Inch Depth

Precision Performance for Tough Concrete: The Diamond Products 1" Star Blue Wet Core Bit

The Diamond Products 09978 Core Bore Star Blue Wet Diamond Core Bit is the professional's choice for achieving the perfect balance of speed, durability, and value. Engineered with premium-grade diamonds, this 1-inch diameter bit is specifically designed to penetrate cured concrete and high-density hard materials with surgical precision. It is an indispensable tool for mechanical, electrical, and plumbing (MEP) contractors who need to create clean, smooth passage holes for small-diameter conduit, gas lines, or anchoring systems in reinforced structures. By utilizing the Core Bore series technology, this bit ensures a high material removal rate while maintaining the structural integrity of the surrounding masonry.

Designed for longevity and industrial reliability, the Star Blue series features a standard 13-inch core length to handle deep-penetration drilling through thick slabs and foundations. This segmented wet core bit must be used with a consistent water supply to maintain optimal cooling and efficient slurry removal, which significantly extends the life of the diamond segments. Equipped with a universal 5/8"-11 threaded arbor, it attaches seamlessly to specialized core drill motors and rigs. Whether you are working on a large-scale commercial jobsite or a precise residential installation, the 09978 provides the mechanical advantage required to produce professional-grade, burr-free holes in the most demanding poured concrete environments.

Key Features

• High-Quality Diamond Segments: Engineered for superior coring value and rapid cutting in general-purpose masonry.
• Specialized Wet Coring: Optimized for use with water to ensure cooler operation and a longer tool service life.
• Precision Engineering: Designed to drill perfectly smooth, precise holes in poured and cured concrete.
• Universal 5/8"-11 Arbor: Provides a secure, standard connection to most professional core drill rigs and handheld motors.
• Industrial Core Length: 13-inch usable depth allows for through-hole drilling in standard structural concrete.
• Value-Priced Series: Part of the Star Blue line, offering professional-grade performance at an accessible price point.

What's Included

• (1) Diamond Products 09978 1" Star Blue Wet Core Bit

Specifications

Pro-Tip: To prevent segment glazing on this 1-inch bit, always start the hole at a low RPM until the segments are fully seated in the material. Once established, maintain a consistent water flow; the water should look like a light, milky slurry. If the water runs clear, you may be using too much, which can prevent the diamond segments from staying "open" and sharp for the next cut.