Features 1、Exceptional Durability: Our multi layer tapered reamer features high sharpness and wear resistant, thanks to accuracy brazing and one piece forging, ensuring longevity and smoothly work in various applications. 2、High Efficiency Cutting with Diamond Grit: Equipped with diamond particles, this hole opener provides incisive cutting edges, allowing for fast and accurate drilling through a variety of materials with its three tiered expansion capabilities. 3、Universal Compatibility and Easy Installation: Designed with a standard 10mm metric threaded handle, this hole opener connects seamlessly to 100 type angle grinders for immediate use. An adapter allows compatibility with handheld drills, enhancing versatility. 4、Versatile Wet and Dry Work: Engineered for both wet and dry drilling, this multi functional hole opener lets users choose their preferred method based on task requirements or preference, without compromising performance or tool longevity. 5、Diverse Material Compatibility: This reamer excels in edging treatment of hard surfaces, including concrete, tile, marble, granite, quartzite, and microcrystalline stone, making it an essential tool for professionals and enthusiasts alike. 6、Boost Your Efficiency with Accurate Hole Enlargement: Offering three size options, our tapered hole opener facilitates rapid and accurate hole enlargement, significantly improving your work efficiency while ensuring high accuracy in every drilling task. Specification Item Type: Diamond Particles Conical Hole Opener Material: Alloy Steel, Diamond Application: for drilling ceramic tiles, marble, etc. Shank: M10 Package List 1 x Multi Layer Conical Hole Opener 1 x Plastic Box