An economical alternative to purchasing a strapping machine. It's simple! The only equipment needed to strap trays are scissors. Wrap the tie strap around a tray, cut to length, and pull tight. These cost saving straps are designed for postal customers who need to comply with classification reform, but are not currently considering a strapping machine. These all-plastic, all-purpose ties come in a 9/16”width. Yellow is the standard color. Use the straps to economically comply with US postal service classification reform.