Feature:1. Carbide Forged: This hole puncher is exquisite forged by carbide and quenched at high temperature, the edge is not easy to break when cutting.2. 75mm Specification: This is a 75mm specification wall hole cutter, which has good stability and durability, ensuring long term usage.3. High Performance: The concrete wall hole opener features high hardness, strong impact resistance and fast drilling speed, provides high working efficiency.4. Welding Technology: Adopt high frequency welding technology, the welding opening is very strong, the inner and outer welding ports are smoothly, provides precise connection.5. Wide Range of Application: This wall hole saw can be widely used for cutting clean holes in concrete, brick work, drilling wall, stone, installing air conditioner, etc.Specification:Item Type: Wall Core BitMaterial: CarbideColour: SilverSpecifications: Approx. 75mm/3.0inUsage: Widely used for cutting clean holes in concrete, brick work, drilling wall, stone, installing air conditioner, etc..Package List:1 xWall Core Bit