Tackle tough cutting jobs with precision using MaxTool 2-11/16-Inch (68mm) Cobalt Bi-Metal Hole Saw. This professional-grade 68mm hole saw features M42 cobalt high-speed steel construction with 1.5” cutting depth, delivering superior performance and durability when cutting through thin metal, pipe, wood, plastic, and composite challenging toughest materials. The innovative 4/6 varied teeth design optimize cutting efficiency, reduce vibration and promote smoother cutting action across different materials. With its standard 5/8-18UNF thread connection, this hole saw integrates seamlessly with standard arbors or mandrels and power tools. The cobalt bi-metal construction combines durability with excellent heat resistance, allowing for efficient cutting action and extended use. The vacuum-furnace hardened teeth maintain their edges outstanding wear resistance and a tendency to stay sharper. Multiple Knock-Out slots are for removing core easily. Thicker hardened wall and back prevent warping. Each hole saw comes securely packaged in a rigid color box for safe storage, transport, easy identification. The sturdy construction and precise grinding make the hole saws the best choice for contractors, DIY enthusiasts and professional craftsmen, while working on construction, maintenance, such as home improvements, remodeling, manufacturing settings, electrical installations, plumbing projects, and other professional applications. The quality hole saw delivers clean, accurate cuts with minimal effort.