AC-PREFP9000BLP, ACME Studio's Easy Flow P9000 Ballpoint Refill, comes in blue ink. It perfectly combines the advantages of the ball pen technique with the rolling ball technology. It is packaged in a sealed plastic sleeve.This refill is compatible with All Standard Roller Balls • All Etched Pens • Hybrid Collection • Stiletto Collection • P2ES33R "Rugby Red" • P2ES05R "Rochettina" • P2H04R & P2H05R "Rings" • P2MD03R "Linear" • P2MG08R "Grid" • P2PS03R "Smudge Stick" • P2LL01RB "OH-Ring" •