Stanley P7 Pliers are designed for heavy duty "Hog Ring" staples The Stanley P7 hog ring staple pliers quickly and reliable seal up ice bags by crimping a metal staple around the bag top. Small enough to be easily portable, the P7 stapler is an essential for any ice delivery truck or small packaging operation as they are inexpensive, reliable, and easy to use. Pop your staple clip in, thread your bag, and squeeze the handles to crimp the staple around the bag to provide a tamper proof and durable seal. Heavy Duty Close your ice bags quickly and reliably. Don't forget to buy your hog ring staples.