Thank you for viewing. INNOVA R DISC 155g Yellow SHOWA KINEN PARK OPEN disc. The disc has an "R" on it, so I think it's "Rock," but the official name is unknown. Please make your judgment based on the shape of the rim. Although unused, there may be some scratches from storage, so please check the photos and consider purchasing. For bulk purchases of discs, we offer a discount of 200 yen off the total price for two items. Please note that we may not be able to accommodate all requests. * We are sorry, but we do not negotiate prices, so please understand. m(__)m