There are two models of this machine.Style 1: Stainless steel cylinder + pre-cooling system + stainless steel mixing shaftStyle 2: Nylon cylinder + nylon mixing shaft, no pre-cooling system Model: GT22W. Voltage: 220V / 50HZ. Power: 1050w. Coolant: R404a. Weight: 42KG. Hopper volume: 3.8L. Freezing cylinder: 1.2L. Dimensions: 21*55.4*74 cm Widely used in cafes, dessert shops, western-style restaurants, snack bars, hotels, and so on.Suitable for milk tea shops, commercial streets, restaurants, etc. in the United States, South America, South Africa, India, Saudi Arabia and other places, with rapid cooling..syi