<p>High Quality Material: This hole saw is made of high quality M42 high speed steel. Sharp edges and high hardness, strong and sturdy. It has anti-oil and anti-rust functions, high hardness. The precision of the concentric degree, so that the edge of the teeth is uniform, extends the life of the hole. Sharp Tooth: Made of high speed steel, the hole saw offers impact resistant teeth and resists tooth abrasion. The tooth shape is sharp, the vibration is small, and it can be quickly balanced when opening the hole, making the operation more stable. Make drilling easier! Chip Removal Hole Design: The hole saw uses a spring design, which has a beneficial effect on chip removal, improves the speed of removing cylindrical iron filings in the hole, and does not cause the phenomenon of cracks and stuck parts. Humanized Design! Easy to Use: With a clean edge hole saw design, this hole saw cuts easily and smoothly. The drill spring automatically pushes the disc out of the saw immediately after finishing the hole. Wide Application: The hole saw is widely used in drywall, aluminum, non-ferrous metals, copper, brass, wood, plastic, PVC and other materials. Suitable for bench drill, electromagnetic drill, pistol drill, impact drill, etc. Practical help for you.