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 in circle (7.2mm). Use to close sausage casings, bags, fish netting, mesh traps and much more. Plier magazine will hold 50 rings.