Feature:1. Longer Service Life: The saw blade is made of strong high speed steel, which is durable, sturdy, sharper, and has longer service life2. Maximum Speed: The maximum speed of the mini circular saw blade is 20000RPM, which can better cope with our work3. Easy to Install: The cutting saw blade sets of these rotating tools are easy to install and replace, elegant and simple design4. Application: Mainly used for copper, iron, aluminum, alloy and other medium hard and thin metal materials, also for plastics, wood, etc.5. Applicable People: These rotating tool accessories can be suitable for DIY projects and home enthusiastsSpecification:Item Type: HSS Circular Saw Blade SetMaterial: High Speed SteelUses: Mainly used for cutting copper, iron, aluminum, alloys and other medium hard and thin metal materialsSaw Blade Colour: GoldenRotating Tool Mandrel Diameter: 1/8inSaw Blade Diameter: Approx. 44mm / 1.73in, 35mm / 1.38in, 32mm / 1.26in, 25mm / 1.00in, 22mm / 0.87inMaximum Speed: 20000RPM.Package List:5 x Circular Saw Blade1 x Rotating Tool MandrelNote:When using the cutting wheel, try to insert the disc into the end of the mandrel. The screws of the rod must be tightened. Wipe the HSS cutting wheel with a cloth after each use, and wipe with machine oil when not in use.