Specification Brand : Yosoo BulletPoint1 : [Efficient Design] Features sharp cutter teeth and chip removal holes for quick and clean drilling, improving work efficiency. BulletPoint2 : [Convenient Storage] Comes with a portable storage box for easy organization and transportation. includes 1 connecting rod and 3 center drills. BulletPoint3 : [Precise Cutting] Utilizes an incisive alloy tip with a fine grinding angle of 135° for easy and fast cutting into the wall, enhancing drilling speed and work efficiency. BulletPoint4 : [Multi-purpose Usage] Suitable for various materials including hollow brick, cement wall, concrete wall, red brick, stone, and more. ideal for installing air conditioning, range hood, water pipe, and other openings. BulletPoint5 : [ Materials] This concrete hole saw set is made of tungsten steel and yg8c alloy, ensuring high hardness and long-lasting durability. Color : (152mm)6" CompatibleMaterial1 : Engineered Wood CompatibleMaterial2 : Metal CompatibleMaterial3 : Fiberglass CompatibleMaterial4 : Stone CompatibleMaterial5 : Wood ItemName : Concrete Hole Saw Kit High Hardness Long Lasting Wall Cement Masonry Stone Brick Drill Bit Sets ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 31 centimeters ItemPackageDimensions_Width : 25 centimeters ItemTypeKeyword : hole-saw-sets Manufacturer : Yosoo Material : Carbon Steel ModelName : Yosoo5xvo2ut7if ModelNumber : Yosoo5xvo2ut7if NumberOfItems : 1 PartNumber : Yosoo5xvo2ut7if ProductDescription : [Efficient Design] Features sharp cutter teeth and chip removal holes for quick and clean drilling, improving work efficiency. [Convenient Storage] Comes with a portable storage box for easy organization and transportation. includes 1 connecting rod and 3 center drills. [Precise Cutting] Utilizes an incisive alloy tip with a fine grinding angle of 135° for easy and fast cutting into the wall, enhancing drilling speed and work efficiency. [Multi-purpose Usage] Suitable for various materials including hollow brick, cement wall, concrete wall, red brick, stone, and more. ideal for installing air conditioning, range hood, water pipe, and other openings. [ Materials] This concrete hole saw set is made of tungsten steel and yg8c alloy, ensuring high hardness and long-lasting durability.