Features: 1. HSS Hole Saw: The hole saw is made of high-speed steel, offering high hardness, good wear resistance, and heat resistance. It features a special heat treatment process that extends service life and helps prevent rust. 2. Sharp Cutting Edge: The high-speed steel cutting edge provides impact-resistant teeth and anti-tooth stripping properties. The sharp teeth deliver clean, smooth, and highly precise cuts. 3. Efficient Chip Evacuation: The unique hole design allows for easy chip removal, improving drilling efficiency. 4. Flexible Spring Design: The spring on the heavy-duty mandrel provides flexible support, enabling the hole saw to absorb drilling impacts when working with difficult-to-cut materials, making cutting easier. 5. Application: This mandrel hole saw set is suitable for cutting holes in soft metal, wood, PVC board, plastic, and plasterboard. It is not recommended for use on hardwood, hard metal, or stone. Specification: Item Type: HSS Hole Saw with Mandrel Material: High-Speed Steel Hole Size: Approx. 80mm / 3-5/32in Hole Depth: Approx. 32mm / 1.3in Hole Saw Height: Approx. 37mm / 1.5in Center Arbor Length: Approx. 97mm / 3.8in Package List: 1 x HSS Hole Saw 1 x Center Drill Bit