Sure-Plot SP-9301 Plotter Pen is designed with a special high pressure reservoir to maintain smooth ink flow while plotting at high speeds. It contains enough ink for 4 miles of plotting. Sure-Plot SP-9301 is compatible with the following plotter cutters: all Roland, all Ioline, Gerber 510 and Emboss Track, Mutoh XP-50, HP Draftmaster, Mimaki, and Allen Datagraph.