Ideal for those who work outside Pressurised refill technology ensures consistent ink delivery, even under extreme conditions (such as -20° Celsius, upside down, on wet paper, in zero gravity etc) Provides smooth and constant dark lines for clear writing on most surfaces Monitor ink supply with the transparent pressurised refill Comfortable fit with a chunky cushioned grip (ideal for cold fingers) Black 1.0 tip gives line width of 0.4mm Packed 12