Dry ice is widely used in all walks of life You can make the dry ice any time. Portable,mini and compact to be used in kitchens, bars,hotels, restaurants-dry ice machine just need small space Easy to use Size of dry ice is : D2.2*H0.83 inch Widely Used Dry ice maker produces solid co2 blocks, which is widely used,eg smoke for food, ice cream, preserving meats and seafood, tissue preservation, specimen shipping, etc. co2 cylinder with siphon tube This product works with liquid CO2 only, do not use other compressed gas cylinders with high pressure or non-liquid CO2. A liquid CO2 cylinder with siphon tube is recommended for effective delivery of liquid CO2. A non-liquid CO2 cylinder may be used if the tank is inverted (turned upside down). Install this product in a well-ventilated area to assist in venting excess CO2.