Elmeco BB Transmission Shaft Complete The shaft screws into the evaporator and sits vertically. It is hollow and allows for the Elmeco BB Shaft (L0000104.001) to rotate freely inside of it. Comes with the red o-ring that sits on the underside of the plastic support piece. To suit Elmeco Big Biz Machine only Height: 230mm Manufacturer Part number: L0000116-002 SKU: 1607011602 Material: Shaft-Metal, Plastic components - White, Silicone O-Ring - Red