Specifications: This pen-shaped eraser is made with iron powder, so the eraser sticks to the magnet. The magnetic pen case makes it easy to collect erasers. Material: Eraser: PVC; Ferrite; Product Size: W 0.5 x H 5.4 inches (13 x 137 mm); Weight: 0.4 oz (12 g); Replacement Eraser: RE035; Art Supplies Shop Dot Com Postcard A; Store Exclusive Product!! cute animal