Item Type: Electric Hammer Hole Saw_x000D_Material: Cemented Carbide_x000D_Color: Silver_x000D_Specification: Approx. 110mm / 4.3in_x000D_Applications: Widely used for cutting clean holes in concrete, brick work, drilling wall, stones, installing air conditioner, etc. 1MAIN PURPOSE: Hollow hole opener, with a specification of 110mm, used in electric hammer and impact drills to open holes in brick walls, pipe holes, etc. 2CEMENTED CARBIDE: Forged with cemented carbide, quenched at high temperature, has incisive edge and high hardness, and is not easy to break when cutting. 3GOOD STABILITY: The hollow hole saw connecting rod is heat treated, which does not break during use, and has better stability when drilling. 4WIDE APPLICATION: Used for cutting clean holes in concrete, brick work, drilling walls, stones, installing air conditioners, etc., with strong practicality. 5EASY OPERATION: The electric hammer hole saw has a standard size, easy to connect and not easy to fall off, which is safe and reliable in operation.1 x Electric Hammer Hole Saw