Features Quick Cutting: 45mm size together with incisive blade enables high drilling speed as well as clean cutting edge. Efficient Use: Ensuring accurate positioning and stable working performance, this hole saw has higher efficiency. Good Material: Made of premium cemented carbide material with good hardness, durable with wearing and long uses. Easy to Install: Light in weight and compact in size, the simple replacement can be quickly completed in minutes. Broad Utility: Can be extensively applied on concrete, brick, wall, stone, installation and many other materials. Specification: Item Type: Hole Saw Material: Cemented Carbide Colour: Silver Specifications: Approx. 45mm / 1.77in Wide Application: Widely used for cutting clean holes in concrete, brick work as well as drilling wall, stones, installing air conditioners, etc.  Package List:1 x Hole Saw Package List 1 x Hole Saw