Categories Product Support Slim Pro (Click) Post author By admin Post date May 12, 2021 This pen style acceps a Parker style refill in either ballpoint or gel. Remove the pen tip by unscrewing it from the lower part of the pen. Remove the ink refill, being careful of the spring (it will be needed by the new refill.) Replace the ink refill and insert it into the pen. Replace the pen tip. ← Princess Pen (Twist) → Oxford