Convenient 2-piece set of stamp cartridges specifically for the HLD-502. - Product Name: Stamp Cartridge for HLD-502 (HLS-252) - Quantity: 2 pieces - Compatible Models: HLD-502 - Material: PET I seem to have purchased these by mistake and they have been stored in a drawer for a long time. Upon listing, I checked if the ink pad could be used, and it worked without any problems.