This double-head milkshake maker is made of durable stainless steel. It not only looks sophisticated and stylish but is strong enough to resist corrosion, waterproof, and anti-rust for a long time. It is faster than hand cranking, without long time stirring, and saves labor as well as safe and secure as it stops rotating automatically by removing the cup. This item is very suitable for business use. Specification Material: Stainless Steel Type: Double-head Product Weight: 7.4kg/16.3lbs Rated Voltage: 110V, 60Hz Rated Input Power: 560W Cup Capacity: 650ml/21.98oz Cup Height: 16cm/6.3in Packing Size: 66*40*28cm/25.98*15.75*11.02in Product Size: 34.5*20*54cm/13.58*7.87*21.26in Rotating Speed of the Motor: Single-speed 12000r/min, double-speed 15000r/min. Package Included 1 x Double Head Milk Shaker Read more How to use When the power supply is connected and the milkshake cup is correctly fitted put the speed switch to the "1" or "2" speed position. Pour milk, ice cream, frozen yogurt and flavoring of your choice into the milkshake cup up to 2/3 of the volume of the cup. Place the cup on the cup hang bracket of this milkshake maker and trigger the microswitch to get to work. Once you have finished mixing, put the switch in the "off" position and remove the milkshake cup. Notes If you do not use the machine for a long time or after using the machine after work that day, please turn off the power to avoid accidental touch. Please allow a slight color difference due to shooting light, and 1-3cm error due to manual measurement, please make sure you don't mind before ordering.