HP Staple Cartridge - 5000 Per Cartridge - for Paper Pack Help avoid job interruptions with the HP Staple Cartridge Refill. With 5,000 staples in the refill cartridge and messages that indicate when the stapler is low, you don't have to worry about running out of staples in the middle of a print job. Features The HP Staple Cartridge Refill is easy to install and use, ensuring accurate stapling for professional-looking documents. With 5,000 staples, the HP Staple Cartridge Refill offers great value and the reliability you've come to expect from HP. Know if staples are running low before you start your print job. You'll see a message when the stapler is low so that, if needed, you can add another refill cartridge before the job starts.