2 1/2in Diamond Core Drill Bit with 14-9/16in Total Length, 7/8in Thread, Core Bits for Concrete, Brick, Block and Masonry, 17.7in Drilling Depth, Drill Attachments

• Wet and Dry Diamond Core Bit: This core bit can be used directly or injected with water, you can choose according to the actual situation to achieve better results.
• Sharp Drilling: The stepped-tooth masonry hole saw is precisely positioned. Sharp drilling and precise control of the hole diameter of the diamond hole drill bit make every drilling achieve the good result.
• Strong Construction: This hard drill accessories are made of premium steel pipe for the drill base, to ensure long time use. Meanwhile, the surface of the diamond drill bits for glass has been specially treated, ensuring a smooth drilling process.
• Effective Diamond Core Drill Bit: The drill attachment's 2.5in diameter and 14.6in length are designed to ensure drilling efficiency and ease of operation and control.
• Versatile Metal Drill Bit: Suitable for brick, block, stone and masonry, whether it's for home DIY, renovation projects or professional production, this core drill machine is a great indispensable tool.

Threaded Groove Design: The threaded groove design of the drill tips increases the friction in contact with the object. In use, this allows the tile hole cutter to maintain a precise drilling position while rotating at high speeds. Quick Chip Removal: The drill block is equipped with specially designed chip removal grooves between the diamond blades to prevent clogging. Meanwhile, the concrete hole saw kit can drill through hard materials faster. Stable Drill Bit Performance: The core drill bits for concrete maintain good performance even over long periods of time, with no noticeable wear or degradation in performance. Professional Design: This drill bit attachment is designed to easily handle hard materials such as concrete, brick, stone or masonry. So this concrete drill bit set is good for professionals and DIY enthusiasts. Product Features: Deeper Drill Capacity, Heavy-Duty Multifunctional, Fast Speed, High-Performance Specifications: Materials: Steel Pipe+Diamond Color: Blue Size: 2.5×14.6in/63×370mm