Technical pen for maximum precision. With hard chrome plated drafting tube. No drying up of ink thanks to double sealing system in cap. Steady ink flow thanks to ink collector system. For use on drafting and tracing paper and on matt drafting film. Easy to refill from bottle or with cartridge. Delivered with empty cartridge. 700 M013, 700 M018, 700 M025, 700 M035, 700 M05, 700 M07, 700 M10.