Produce bright, consistent impressions with this Offistamp red pre-inked stamp refill ink. Refresh pre-inked message stamps to make thousands of clear impressions with this 0.33-ounce red refill ink. Featuring an oil-based formula, this Offistamp refill ink spreads thoroughly and evenly across dry pads to produce crisp, reliable results with each stamp. Ink refill is ideal for self-inking and traditional stamp pads. Red ink refill. Oil-based formula.