This is the giant medium green ballpoint pen refill designed by LAMY. This M16 ballpoint pen refill has been designed to suit the following LAMY ballpoint pens; 2000, Imporium, Scala, Accent, Studio, Aion, Lx, Logo, Econ, Noto, AL-Star and Safari. This medium green ballpoint pen refill's writing capacity varies according to line size from approx. 4,500 to 8,000 m.