1″ Wet Diamond Core Drill Bits, 14″ Drilling Depth Core

Product Overview

This 1-inch wet diamond core drill bit from HBKEEN is engineered for deep, precise drilling into the toughest construction materials such as concrete, reinforced concrete, brick, block, and marble. With a 14-inch maximum drilling depth and a universal 5/8″-11 thread arbor, it’s designed to work seamlessly with standard rotary hammer drills and core drilling machines. The bit features laser-welded turbo segments that deliver aggressive cutting action while maintaining segment integrity under high-stress conditions. Operating exclusively in wet mode ensures optimal cooling and lubrication, which not only extends tool life but also produces cleaner, more accurate holes—ideal for professional contractors and serious DIYers tackling demanding masonry projects.

Key Features

• Laser-Welded Turbo Segments: Advanced laser welding technology bonds the diamond segments to the steel core with exceptional strength and precision. This process eliminates delamination risks and ensures consistent performance during prolonged use in hard substrates.
• Turbo Segment Design: The aggressive cutting profile includes strategically placed chip removal holes that efficiently evacuate debris from the hole, preventing clogging and maintaining smooth operation even in dense or rebar-laced concrete.
• Wet-Use Only Operation: Continuous water flow is essential for effective heat dissipation and friction reduction. Dry drilling will generate excessive heat, leading to rapid wear, segment damage, and potential failure of both the bit and your equipment.
• Precision Engineering: Concentric axes alignment and highly regular sawteeth minimize wobble and vibration, promoting straighter, more accurate holes—critical when installing electrical conduits, plumbing sleeves, or anchor systems.
• Universal Compatibility: The 5/8″-11 threaded shank fits most standard drill adapters, spindles, and extensions used across major brands of rotary hammers and core drill rigs.

Technical Specifications

• Diameter: 1 inch (25.4 mm)
• Maximum Drilling Depth: 14 inches (355.6 mm)
• Thread Type: 5/8″-11″
• Compatible Materials: Concrete, reinforced concrete, brick, block, hard brick, asphalt, marble
• Operating Method: Wet only—water must be continuously applied during drilling
• Model Number: SZX1
• Package Dimensions: 17 x 2.4 x 2.4 inches
• Weight: 1.44 pounds
• Country of Origin: China

Benefits & Use Cases

This core drill bit excels in applications requiring clean, deep holes through heavily reinforced or extremely hard masonry surfaces. It’s particularly effective for installing electrical conduit runs, creating openings for plumbing stacks, setting anchor bolts, or preparing channels for HVAC ductwork in concrete walls and floors. The high-quality diamond matrix allows it to cut efficiently around embedded rebar without compromising speed or accuracy.

Because it operates strictly in wet mode, this bit generates significantly less dust and heat compared to dry alternatives—making it safer and more practical for indoor jobs where ventilation is limited. Proper water application also improves surface finish quality and reduces chipping at the hole edges, resulting in professional-grade results every time.

Whether you’re working on a commercial renovation, new construction site, or large-scale home improvement project, this 1-inch wet diamond core bit delivers reliable performance backed by HBKEEN’s commitment to durability and innovation.

Important Notes

• This is a wet-use-only drill bit. Never attempt dry drilling—doing so will dramatically shorten its lifespan and may damage both the bit and your drill machine due to overheating and accelerated wear.
• Always confirm that your drill accepts a 5/8″-11 threaded shaft before purchase to ensure full compatibility.
• Some users have reported shorter thread lengths than expected; verify fit if using with specific adapters, couplings, or extension rods that require extended threading.
• Begin drilling in a vertical position and maintain steady downward pressure while gradually increasing depth. Avoid lateral force or twisting motions to preserve segment alignment and hole straightness.
• Ensure a consistent supply of clean water throughout the entire drilling process. Insufficient coolant can lead to premature failure and poor cut quality.
• If you encounter any issues with product performance or quality during use, contact HBKEEN customer support promptly for assistance—they aim to provide a satisfying experience for all customers.