F.Dick 30 LB Capacity, Hand Cranked Vertical Sausage Stuffer. Rack and Pinion Gearing with 2-Speed Operation. Stainless Steel Gear Box, Cylinder, Base Plate and Support Rods. The air-exhaust valve in the piston, allows excess air to escape as the piston moves down. The valve closes automatically when the piston touches the meat. This decreases air pockets in your sausage links. Supplied with four plastic funnels in approximate sizes: 1/2″ (12mm), 3/4″ (18mm), 7/8″ (22mm) and 1.25″ (30mm). Sturdy construction. Easy to operate and clean.