Kobe, the compost turner is built by a company named Scarab, they are still in business building these machines. This is a 14' model, built in 1979, serial #0036. We bought the drum, bearings and the belting from them. They tell me this might be the oldest machine running. The a/c works so the operator can keep the door shut while running, the ammonia smell this thing puts out while running will make you tear up and wonder where you went wrong in life.