Avery Marks-A-Lot Pen-Style Dry Erase Markers, Bullet Tip, Assorted Colors, Pack of 4 (24459) Dry erase ink wipes away easily with an eraser or dry cloth Formulated for bold, long-lasting writing Marks on whiteboards, glass and other nonporous surfaces Bullet tip lets you write clearly in small spaces Cap can be left off for up to 24 hours without drying out