The JEMLINE3200 tensioner is a premium heavy duty product for the highest performance tensioning of all non-metallic strapping (3/8" - 3/4"), including polyester, HR nylon, and polypropylene. The innovative gripping mechanism holds and releases strapping with a vertical motion providing increased holding power and reduced wear. The heavy duty cutter reduces force required and extends cutter life. A patented windlass return machanism makes strap loading a breeze. Strapping shields keep the strap end from interfering with the sealing process. Cast metal body parts are of high quality modern ergonomic design for enhanced durability with high quality paint finish.