Don't toss out your favorite self-inking stamp just because it's running dry! This is the official Xstamper brand refill ink. It's a 0.34 fluid ounce bottle of black ink specifically formulated for Xstamper brand stamps, including their Title Stamps, Jumbo Stamps, Specialty Stamps, and VersaDaters. Using the correct ink is super important – other inks might clog the tiny pores in the stamp pad and ruin it. Refilling is usually pretty easy: you just drip the ink onto the stamp pad until it's saturated, let it soak in, and you're good to go with crisp, clean impressions again. It's a cheap and easy way to extend the life of your stamp for years. Much better than buying a whole new one! Just make sure your stamp is an Xstamper brand before you buy.