< ul >< li > SMOOTH PERFORMANCE : Specially formulated ink flows flawlessly for a superior writing experience . < li > RELIABLE WRITING : High quality ink formula offers consistently smooth laydown while the medium - point tip produces crisp , bold lines for excellent visibility < li > FADE RESISTANT : Rollerball Ink is tested to archival standards to resist fading and dries in a matter of seconds < li > COMPATIBILITY : Rollerball Gel Ink Refill for Selectip Pens , Medium , 8523 - 2 Black is compatible with the Century II , Townsend , ATX , Peerless , Wanderlust , Botanica , Bailey , Bailey Light , Calais and Edge Rollerball Pens ( sold separately .) < li > QUICK DRYING FORMULA : ink only takes seconds to dry , eliminating smudges and smears < li > ABOUT : Since 1846 , A . T . is a leading manufacturer of fine writing instruments . 21 + patents for pioneering creations like the propel - repel pencil and Stylographic pen < li > offers a wide range of ball - point refill sizes and colors ; Selectip gel rolling balls , porous - points , ball - points and document markers < li > has re - invented writing instruments with jewelry - quality craftsmanship . < li > Full Perpetual Warranty Guarantee . < li > All writing instruments are unquestionably guaranteed against mechanical failure , regardless of age . < li > Should there ever be a problem , please call a Customer Service Specialist at 1 - 800 - 282 - 7677 . < br >< div > < h3 > < span > Product Description < p > < span > Gel ink refills are designed for use with Selectip Rollerball Pens . Refills offer a smooth alternative to the free - flowing ink of a fountain pen , with the convenience of a ballpoint . < h3 > < span > From the Manufacturer < p > < span > Black Fine - Ball - point refill for standard ball - point pens . Suitable for general - purpose writing , highly reliable and convenient for use on all paper .