For sale is a Columbia Air-Operated Banding Tensioner / Banding Sealer (Welder). Model 5305. Serial No.0409. Works with PP / PET banding up to 3/4" wide and 0.050" thick. Dual air motors: (1) for tensioning and (1) for welding. Friction welding system uses no clips or seals. Adjustable maximum banding tension.