Specifications: Pressurized ballpoint pen refills for SN-200PT-10. Package Size: W 2.0 x D 7.3 x H 1.4 inches (W 50 x D 185 x H 35 mm); Package Weight: 2.4 oz (64 g); Ball Diameter: 0.04 inches (1.0 mm); Main Unit: SN-200PT-10 (pressurized ballpoint pen); Art Supplies Shop Dot Com Postcard A; Limited Product! 1 x Cute Animal Postcard