High capacity, brass, nickel-coated, the tip of the ink is made of high nickel content and features a tungsten carbide TC ball. The ink connection system is made of plastic. The ink is resistant to external factors and meets the specifications: ISO 12757 volume 1 and 2, EN 71/3 + 9 + ASTM F936 as well as ASTM D4236 and DIN 9001. The ink consumption coefficient is 21 mg per 100 meters of writing line, which means it offers a smooth and reliable start of the intended line.