Amazon.com: 2" bag filling tube #12 by Smokehouse Chef. Fits the size #12 meat grinder only. You round discs should be 2 3/4" (69mm) to confirm you size. : Home & Kitchen
Amazon.com : Source One Deluxe Clear Acrylic Tube 3 Inches Thick (12 Inch, 3 Inch Wide) : Office Products
Amazon.com : Premium Kraft Cardboard Mailing Tubes - 1-1/2" x 12" - 1.5" Opening Diameter 12" in Length - Case of 50 Shipping Tubes with White End Caps (1.5x12) for Storing and