【Specifications & Product Size】 Retiton Cutting Wheel Kin no Tamago 180x1.5x22 1 box of 10 pieces, unused/unopened Abrasive grain, grit, hardness: AZ46P. Maximum operating peripheral speed: 80m/s. Maximum operating speed: 8490rpm. Reinforced on both sides This product is new, unused, and unopened. There may be some scratches on the outer box due to warehouse storage, but there is no problem with the product's performance. We have many other items for sale. Thank you for your consideration.