Maintain optimal performance of your Xstamper and XstamperVX products with this oil-based refill ink. It uniformly re-inks the Xstamper Title, Jumbo, Specialty, N-Series Custom, C-Series Custom, VersaDaters and SlideDater stamps. Each bottle has a twist cap that stops ink from leaking. For best results, re-ink your stamp pad overnight to allow the ink to fully absorb into the stamp pad.