Features 1、This hole saw is preferably a bimetal band saw blade, which is acute and durable and easy to operate. 2、The cutter head of this hole saw cutter is made of M42 high-speed steel, high temperature quenching treatment, and long service life. 3、The positioning drill bit of the hole saw drilling tool is accurate and stable, and the unique opening design makes it clean and neat when working. 4、This hole saw cutter is equipped with a quick-release spring, which is easier to be taken out after cutting. 5、The round hold saw can be used to open holes in various wood panels, acrylic, aluminum gussets, and iron sheets. Specification Item Type: Hole Saw Material: M42 High Speed Steel Use Equipment: Hand Drill, Bench Drill and Other Flat Drilling Equipment Applicable Scope: Can be used to open holes in various wood panels, acrylic, aluminum gussets, iron sheets, etc. Size (dia): Approx. 120mm / 4.7in 125mm / 4.9in 130mm / 5.1in 135mm / 5.3in 140mm / 5.5in 145mm / 5.7in 150mm / 5.9in 155mm / 6.1in 160mm / 6.3in 165mm / 6.5in Package List 1 x Hole Opener 1 x Drill