These improved Spring-Loaded Pliers And Rings make it easy to crimp rings to a smaller diameter! The pliers are commercial-quality with ergonomically designed soft rubber handles. Heavy construction ensures years of use and a convenient automatic feed system ensures ease and productivity. Comes with 600 rings that will close to a 9/32" circle (7.2mm). Use to close sausage casings bags fish netting mesh traps and much more! Plier magazine will hold 50 rings.