With silicon rubber bellows ,reinforced with ribs (also available as spare parts)Nylon cheeks, fiberglass-filled, heat-resistant Silicone suction valve Rear cheek, prepared with preholes for screwing the body to the smoker -adaptable on any model -Air conveyor Air volume lt. 1.20 Weight gr. 300 With cylindrical stainless steel container essential for using pellet fuels