21 months development-time, exchangeable 60 mm high-flow tip, 8 ink-channels, 1 äMASTERPIECEô. Our biggest pumpmarker is absolutely record-breaking, not only judging by its numbers. Its patented FlowmasterÖ pump-valve provides a constant ink-flow for quick applications on larger areas. The included CoversAll cocktail ink with synthetic bitumen and its pitchblack, permanent, viscoplastic coating is alcohol-based, high-covering, UV- and weather-resistant, quick-drying, abrasion resistant and therefore perfect for indoor- and outdoor-use (signal black). Of course, it's refillable very easy with all of our inks and paints. But the best results you¦ll get with the alcohol-based CoversAll and Speedflow refill cocktails.