Product Information Brand : Picasso Ink Refill (Cartridge): International standard Suitable for : Picasso fountain pen Package : 20 pieces Picasso ink cartridge (Black) About Us: 1.We always strive for excellence, innovation, quality products and high standards of customer service. If you have any question or query, please feel free to contact us first , we will take active measures to help you solve the problem within 24 hours Monday to Sunday. Thanks. 2.We ship within 48 hours after we receive your payment. Sometimes parcel may be delayed due to Customs inspections. Your understanding and patience will be highly appreciated.