Adjustable Size and Speed】The controller is protected by a transparent outer casing. Controller can control speed and size, 304 food grade stainless steel feeding funnel, healthy and safe, easy to clean Wide application】This Tapioca Pearl Making Machine is suitable all kinds of freshly squeezed juices concentrated juices. The boba can be used in bubble tea,ice cream,cake decoration and egg tart filling. Service ：We value your shopping experience! If you have any questions, please contact us, and we will respond within 24 hours. Boba Popping Maker】Automatic popping juice ball making machine is new developed and healthy products, for making the popping boba with jam, The inside is mixed with real fruit juice and flavors. Should you choose to put it on top of your fruit tea, it's a great way to mix and match a unique drink. Working principle】Food grade sodium alginate in raw materials chemically reacts with food grade calcium chloride in water and solidifies into a spherical shape. The popping boba can be used in bubble tea,ice cream,cake decoration and egg tart filling.