The Grog Buff Proof Ink 200ml Refill, first released in 2000, has been updated to offer improved performance. This ink is designed for refilling Grog Squeezer (BPI) markers.

• Refill ink for markers with fuchsia labels
• Difficult to remove or paint over
• Ideal for use on lighter backgrounds
• Features extreme color flow for perfect drips
• Xylene-free, alcohol-based ink