Itatools ITA 44-45 Pneumatic Air Steel Strapping Machine is two separate machines that work in combination. While our ITA 44 model performs the tensioning process, our ITA 45 model connects the straps to each other with a notching system. Our ITA 45 model, which allows the strap to be buckled with a single notch, works with 5.5-7 Bar pressure. The weights of our ITA 44-45 model are quite ergonomic in terms of ease of use.