This steel strapping tensioner can be used both horizontally & vertically, making it suitable for any strapping application. The tensioner is suitable for 13-19 mm wide steel strapping. The steel strapping sealers clinches metal seals to create a double notch fastening, ideal for heavy duty applications & for continuous product use. The sealer can be used with 13, 16 or 19 mm wide steel strapping. When choosing your steel strapping sealer be sure to choose the correct width corresponding to the width of your steel strapping. 1 year warranty