Specifications Material: Diamond Type: Grinder Wheel Color: Black Bore Diameter: 22.23mm Item Size: 20.5x16x2x cm/8.06*6.29*0.79 115mm 21x17x2cm/8.25*6.68*0.79125mm 27x23x3cm/10.61*9.04*1.18 180mm Net Weight: 360.0g/12.70oz 115mm 420.0g/14.82oz125mm 786.0g/26.31oz 180mm Package Included:1Pc * Grinding Wheel Features 1. Double sandblasting edge: Double sandblasting edge design (5mm/0.2" segment), chip smoother, sharper cutting, longer life. 2. Vibration-free design: The vibration-free design greatly reduces operator fatigue and is more efficient than traditional abrasives. 3. Applicable models: The grinder wheel is perfectly suitable for polishing machine, angle mill and so on. 4. Dry and wet grinding: The grinder wheel is made from high-quality diamond, durable and wear-resistant, used for dry and wet grinding. 5. Scope of application: The grinder wheel fits for cutting objects such as stone grinding, asphalt grinding, ceramic grinding, etc. Notes 1. Please allow slight measuring deviation due to manual measurement. 2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 3.Please leaving a message before you give the bad feedback, if the products have some problems.Thanks for your understandings.