1 DURABLE AND STURDY: The saw blade is made of strong high speed steel material, durable and sturdy, and has a good combination of strength and toughness 2 20000RPM MAXIMUM SPEED: The maximum speed of the mini circular saw blade is 20000RPM, which allow you to better cope with work 3 EASY TO INSTALL AND REPLACE: The cutting saw blade sets of these rotary tools are easy to install and replace, very convenient to use 4 FOR MEDIUM HARD AND THIN METAL MATERIALS: Mainly used for copper, iron, aluminum, alloys and other medium hard and thin metal materials. Can also be used for plastic, wood, etc. 5 6 DIFFERENT DIAMETERS: Rotary tool shaft diameter for 1/8in, saw blades have 6 different diameters of 50mm, 44mm, 35mm, 32mm, 25mm, 22mm

What's in the box
6 x HSS Circular Saw Blades