RDT 18" Core Drill Bit Extension Shaft 1-1/4"-7 Thread Adapter, Durable Heat-Treated Steel for Diamond Core Drill Bits On Concrete, Masonry, Stone (Hexagon)

Heavy-Duty Steel Construction: Made of industrial-grade, heat-treated steel for superior durability and wear resistance. 18-Inch Extended Reach: Drill deeper and more efficiently through thick concrete and masonry surfaces. 1-1/4"-7 Thread Compatibility: Ensures a stable, secure fit with most standard diamond core drill bits. Smooth & Accurate Drilling: Minimizes vibration for precise, clean holes every time. Professional & DIY Use: Ideal for construction workers, contractors, and home renovators seeking long-lasting performance.

• HEAVY-DUTY DESIGN BUILT FOR TOUGH JOBS: Crafted from premium heat-treated steel, this 18" core drill bit extension delivers exceptional strength, wear resistance, and stability even under the harshest jobsite conditions. Engineered for professional use, it ensures long-lasting performance and reliable drilling power on every project.
• PERFECT FOR DEEP DRILLING: With a 18" drilling depth, this core drill extension shaft allows you to reach greater depths, making it ideal for drilling through thick concrete and masonry. Whether for commercial or DIY projects, it enhances your ability to handle larger drilling tasks.
• STRONG COMPATIBILITY：The core drill bit extension works seamlessly with most standard core drill bits, featuring a 1-1/4"-7 thread that ensures a secure and stable fit for efficient drilling. Whether you're working with diamond core bits or other types, this extension adapts effortlessly to your needs.
• EFFICIENT AND RELIABLE DRILLING: Designed for smooth and effective drilling, this extension shaft minimizes vibration and provides consistent stability throughout the drilling process, allowing for precise and clean holes every time.
• VERSATILE FOR A RANGE OF APPLICATIONS: Whether you’re drilling into concrete, stone, or masonry, this 18" core drill extension shaft is the ideal tool for professional contractors and DIY enthusiasts alike. Its solid construction and compatibility with various core bits make it perfect for a wide range of drilling applications.