Specifications: Replacement eraser for mechanical pencils with cleaner pins. Material: Eraser: Styrene elastomer, Metal Fittings: Stainless steel; Body Size: φ0.2 x 1.3 inches (5 x 33 mm); Product Weight: 0.02 oz (0.5 g); Quantity: 2 pieces; Main Unit: XPP502, XPP503; Art Supplies Shop Dot Com Postcard A: Limited Product! 1 x Cute Animal Postcard