Premium Material: Made of YG8 carbide and tungsten tips with heat treatment and hardened for sturdy and durable Cut a Perfect Hole: Hardened tips combine an optimized design providing smoother and faster cutting of 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 bit is widely used for cutting concrete, brick engineering, wall drilling, stone, air conditioning installation, etc. 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 that focuses on all the details that matter to you. Product Description Carbide Hole Saw We aim to manufacture the best products to inspire our customers to live a more convenient and safer lifestyle. We have a professional product monitoring team that focuses on every