Kwik Fill bags are compatible with all automatic packaging equipment. These bags feature a vertical perforation that allows easy access to the contents. Like all Kwik-Fill bags, They're made with LK's exclusive Tuf-R resin for the added strength that's needed for the stresses of automated packaging equipment. Kwik Fill bags are pre-opened for easy loading and feature precise perforating for easy separation, so they also work great for manual applications. Because these bags are made from 100% virgin low density polyethylene, they meet FDA requirements for use in food applications. Kwik-Fill bags are made with LKs exclusive Tuf-R resin for added strength Vertical perforations make the bag easy to open by the user Industry standard core makes them compatible with all automatic packaging equipment