MaxTool 1-5/16-Inch bi-metal hole saw is engineered for superior performance across multiple materials. This 33mm versatile hole saw features high-speed steel M3 construction with a 1.75" cutting depth, making it ideal for precise holes in metal wood plastic and composites. The innovative 4/6 varied tooth design optimizes cutting efficiency while reducing vibration during use. With its standard 5/8-18UNF thread connection, this hole saw integrates seamlessly with common arbors and power tools. The 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. The varied tooth design helps reduce vibration and promotes smoother cutting action across different materials. 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 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.