Deal includes 1 ea. 528 50 Mars Plastic eraser holder with one eraser in the holder plus 1 pack of two 52855 refill erasers. Stick eraser removes graphite pencil marks from paper vellum and drafting film. Click-stop push button advances and retracts eraser core. Design includes a nonabrasive surface, extra-long eraser for longer life and convenient pocket clip for easy access. Eraser is made of latex-free, soft vinyl. Refillable with S6A52855 refills. Eraser holder is 5-3/16″ in length. Eraser refill is approx 3-3/4″ in length.