Specifications: Replacement rubber for EH-KE (0.1 inch (3.8 mm) diameter). Material: Eraser: Styrene synthetic rubber; Package Size: W 1.3 x D 1.6 x H 5.5 inches (34 x 4 x 140 mm); Package Weight: 0.2 oz (6.7 g); Quantity: 4 pieces; Poly Pack; 0.1 inch (3.8 mm) diameter