PEN REFILL COMPATIBILITY: The ballpoint pen refills are compatible with item number 99324, 99335, 99325, 99334, Prelude, 100 Series, 300 Series, 500 Series, Targa, VFM, Sentinel, and Intensity. SMOOTH FLOW INK: Our pen ink is specially formulated and to prevent your refill from drying out while not in use.
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