Description: This cutting wheel is sharp and strong, has small kerf and high sharpness.It has high hardness, wear resistance, and excellent impact resistance.Great for cutting jade, thin iron, glass, etc. Suitable for most rotary tool and air tools, such as grinder.Note: Please remember to wear gloves and goggles when using it. When cutting, you can add some water to keep it cool.Specification: Color: Silver ToneMaterial: Diamond, Nickel Plated Carbon SteelMaximum speed: 30000R.P.Mwheel Diameter: 22mm / 0.87inchHole Diameter: 3mm / 0.12inchThickness: 0.65mmMandrel Length: 36mm / 1.42inchMandrel Diameter: 3mm / 0.12inchThread Diameter: M3Package Content: 10 x Diamond Cutting Wheels2x Mandrels.