Premium Material: Made of carbide and YG8 tungsten tips with heat treated and tempered for sturdy and durable Cut a Perfect Hole: Hardened tips combine an optimized design providing a smoother cut and faster from a hole without vibration High Efficiency: Design of two large chip openings on both sides of the wall cutter for smoother chip removal and higher drilling performance Professional Core Drill Bit: The cement brick hole saw drill bit is widely used for concrete cutting, brick engineering, wall drilling, stone, air conditioning installation, etc.< /p> Our Difference - We aim to make the best products to inspire our customers to live a more convenient and safer lifestyle. We have a professional product monitoring team who focus on every detail that matters to you. Product Description Carbide Hole Saw We aim to make the best products to inspire our customers to live a more convenient and safer lifestyle. We have a professional product monitoring team who focus on every detail that matters to you. Description: Material: Carbide, Tungsten YG8 Center drill: Masonry drill 8 mm Shank type: SDS Plus Features Cut perfect circles with these hole saws. Carbide body with YG8 tungusten tips Features improved tooth geometry for faster cutting. Thicker, hardened tips improve durability. Positive and aggressive point cutting angle. Suitable for hard brick, concrete, cement stone wall, etc. Precautions: 1. The hole opener and connecting rod must be used together to penetrate the wall. 2. Disable hammer drill mode. After drilling the wall, you can remove the positioning drill and reopen the hole. 3. Hole openers cannot be used for load-bearing walls, walls with steel bars. 4. This hole saw drill bit cannot be used for hammer drills and three-jaw chuck hand drills. 5. To support drilling performance, remove drill dust by moving the bit back and forth.