Pentel MAXIFLO Whiteboard MarkerUnique pump action system Whiteboard Marker Features a unique push button operation that primes the tip of the marker with a fresh supply of vivid ink & visible ink reservoir shows ink levels. * Remove with a dry cloth or board eraser* Bullet Point & Chisel Point Maxiflo Whiteboard Liquid Ink Dry Wipe Marker/Dry Erase marker* Unique pump action system to replenish ink supply* For white and porcelain boards