: This hole saw is made of M42 high speed steel. It features sharp edges and high hardness, providing strength and durability. It offers oil resistance and rust resistance with high hardness. The precision concentricity ensures uniform tooth edge distribution, extending the life of the hole saw. The sharp tooth design reduces vibration and allows for quick balance during operation, resulting in stable performance and easier cutting. Chip removal hole design: The hole saw incorporates a spring-loaded design that enhances chip removal, improving the evacuation speed of cylindrical chips and preventing issues such as cracking or jamming. Thoughtful design for improved efficiency. Easy to Use: Featuring a sharp-edged design, this hole saw enables smooth and effortless cutting. The integrated drill spring automatically ejects the core after drilling, simplifying operation. Wide Application: Suitable for use on plasterboard, aluminum, non-ferrous metals, copper, brass, wood, plastic, and PVC. Compatible with bench drills, magnetic drills, deep hole drills, and impact drills. A practical tool for various drilling tasks.