A reliable, stable design with over 20,000 units sold worldwide. It has mechanical outside tension control and heavy duty casters. The short-feed sensor will not cycle if strap is not in proper location. The E600 can cycle by ball switch, panel switch or foot switch, and it equipped with stainless table tops with rollers. The E600 has 9, 12 or 15.5mm available (3/8, 1/2 or 5/8 inch) - select at time of purchase with various arch sizes available. It runs on a 110 volt, single phase, 60 cycle rotating 27 straps/minute.