Retiton Cutting Wheel Kin no Tamago 105x1.0x15 1 box of 10 pieces, unused/unopened Abrasive grain, grit, hardness: AZ60P Maximum operating speed (m/s): 80 Maximum rotation speed (rpm): 14400 This product is new, unused, and unopened. There may be some scratches on the outer box due to warehouse storage, but there are no problems with the product's performance. We have many other items for sale. Thank you for your consideration.