Grinding Wheel Easy Installation Saw Blade Kit Standard Sizes with Connecting Rods for Wood Plastic Stone Metal Specification: Item Type: Cutting Saw Blade Kit Material: High Speed Steel Resin Silicon Carbide Mini Saw Blade: Maximum Speed: 20000RPM Diameter: 7/8in22mm 1in25mm 1-1/4in32mm 1-1/2in35mm 1-3/4in44mm Abrasive Wheel Diameter: 1in 25mm Grinding Wheel Diameter: 7/8in 22mm Resin Cutting Disc: 1-1/4in 32mm Connecting Rod Diameter: 1/8in 3.2mm/3mm Package List: 5 x Saw Blades 10 x Grinding Wheels 10 x Resin Cutting Discs 30 x Abrasive Wheels 5 x Connecting Rods Note: When using do a good job of protecting hands and eyes.