1-5/8" Diameter Pre-Inked Stamp. Pre-Inked stamps are similar to self-inking stamps in that an ink pad is not required. They have the ink infused directly into the printing die itself. This die is made of a high-tech material that has tiny micro-porous cells which retain the ink and only release the right amount when gentlypushed down to transfer a clean, crisp impression.
These stamps are generally good for 25,000 or more impressions before re-inking is required. They come with a protective cover that should be replaced after use to maintain the printing die.