Parker Quinck roller ball refill, blue ink, medium point, in blisterConvenient control – smart resultWriting length: appr. 1000mFits all Parker roller ball pens and contains advanced ink technology for consistent high-quality writing.Parker writing instruments are produced to the most exacting standards and only genuine Parker Quink inks and refills should be used as they are specially designed and formulated to ensure our products give faultless service and optimum writing performance.