Premium Material: Made of cemented carbide and YG8 tungsten tips with heat treated and hardened shape for sturdiness and durability. Cut a Perfect Hole: Hardened tips combine an optimized design to ensure a smoother and faster cut through 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: Cement brick hole saw drill bit is widely used for cutting concrete, brick construction, wall drilling, stone, air conditioning installation, etc. /p>