Ninja Paintball Complete Macroline and Fittings Paintball Air System Kit - 2 Feet Of Macro Line - 1 90 Degree And Straight Macro Fittings Ninja Paintball complete paintball macro line kit is universal to fit any paintball marker. Macro line hose is the easiest hose to work with when running air for you marker. Cut the ends straight with a razor blade (not scissors) and slide it in to a Macro Line Fitting. You're good to go! Comes with an extra foot of macro line just in case! Push-on adapters allow easy removal and installation of macroline. Macroline is a step above microline. It has a larger diameter hose for increased air flow and a higher PSI rating to reduce blow outs.