Agion? antimicrobial technology, with Zeomic? Type AJ Silver Zeolite A, suppresses the growth of algae, mold, mildew, fungi and bacteria which cause unpleasant odors, discoloration, staining, deterioration and corrosion. Medium point creates clean, crisp lines. Choose the smooth-flowing refill pen made specifically for the PM Company Preventa Counter Pen. Pen Refill Type: Ballpoint; Refill For Series: Standard PMC05057 Counter Pens; Tip Type: Conical; Point Type: Medium.