1、Reliable Work: The brick and stone hole saw kit is made of premium carbide. It can help you quickly drill clean holes and can be used for many years even under harsh conditions. 2、Wide Application: The cement hole saw can easily drill through the most common wall materials, such as stone, cement, bricks, etc. It is the ideal tool for opening holes and exhaust pipes when installing air conditioning, water pipes, and water heaters. 3、Broad Compatibility: The hole saw with universal shank is suitable for various electric hammer drills that accept standard tool holders, making your hammer drill more useful. 4、Excellent Design: Incisive alloy head with a accurate grinding angle of 135 °, easy to cut into walls. Realize fast drilling and improve work efficiency. 5、Easier Drilling: Sharpness and chip removal hole design of three blade teeth. Enable you to quickly remove internal and external scratches while drilling, making it cleaner, faster, and more effective.