Features [11 Piece Hole Saw Kit] This kit includes hole saws in various sizes, ranging from 68 to 6mm, suitable for cutting through ceramic tiles, marble, granite, and more. [High Efficiency] The hole saws in the range of 6 to 10mm are filled with cooling wax, while the hole saws of 20mm and above come with chip removal holes, enhances heat dissipation and chip removal, resulting in higher efficiency and improved performance [Multi Function] Use these diamond hole saws to shape, enlarge, or create circular bevel cuts in pre existing holes, providing versatility for various applications. [Vacuum Brazing Technology] These hole saws are crafted using vacuum brazing technology and feature diamond particles, ensuring fast and smoothly drilling, as well as prolongs the overall lifespan. [Hex Conversion Shank] The kit comes with an M14 to hex shank adapter, allowing compatibility with different types of drills, such as corded drills, cordless drills, and benchtop drills. Specification: Item Type: Hole Saw Kit Material: 40cr Emery Hole Size (Metric): 68 50 45 35 28 25 20 12 10 8 6mm Drill Bit Length: Approx. 60mm/2.36in Thread: M14 Adapter: M14 to Hex Shank (8mm) Package List:11 x Hole Saw 1 x Conversion Shank 1 x Storage Case Package List 11 x Hole Saw 1 x Conversion Shank 1 x Storage Case