Canning Backstand Idler By PW | March 25, 2011 | Comments Off on Canning Backstand Idler Canning Backstand Idler Heavy Duty Floor Mounted Refurbished Left Hand or Right Hand with 7” Pulley. Posted in Metal Polishing Machines and tagged Canning Backstand Idler, Heavy Duty Floor Mounted, Left Hand, Metal Polishing Machines, Pulley, Refurbished, Right Hand