560-042 4 inch drive wheel with bushing is a two part heavy duty balanced aluminum pulley used on the Kalamazoo Industries 3 x 90 and 4 x 90 inch grinders.
563-002 6 X 48 INCH INDUSTRIAL BELT SANDER STEEL PLATEN
563-002 6 x 48 inch industrial belt sander steel platen is a reversible and replaceable steel platen will fit on all 6 x 48 inch belt wet and dry belt sanders.
563-003 1 x 42 inch sander steel platen is adjustable and used for conventional sanding wood or steel. This metal backing for the 1SM belt is slotted so you can adjust it backward or forward, and it is easily removable.