Portable Household Solid Co2 Dry Ice Maker With Collection Bag G5/8 , Cga320 Or W21.8-14 The product is shipped based on the color or size of the main image of the product page. Portable Household Solid CO2 Dry Ice Maker Operation Manual It is a complete mechanical device that is designed to fit into any cylinder of carbon dioxide with siphon bube. To assemble, Slide the open part of the bag above the stainless cone. Then slide the plastic ring over the plastic cone 4mm and tighten to full accomplish the seal. Open the carbon dioxide valve of the cylinder at least one full turn. The collection bag will start immediately filled with flakes of dry ice. When the bag is completely filled, close the cylinder valve and slightly hit the conical part to fall dry ice blocks from the cone. (They possibly left inside) The dry ice can pressed to become harder or leave it in the form of flakers, depending on The use you want to do. Attention 1, Always wear safety gloves when you work with dry ice, because it is dangerous for causing burns at your skin as the dry ice is -80 C Temperature. 2, Keep away from children , the dry ice danger for skin burn. 3, The Carbon Dioxide cylinder must be with siphonic tube inside. The Thread for Big Bottle: W21.8-14 , G5/8 or US CGA 320 Material: Brass Weight:204g Thread Type 1 (Outlet valve diameter 21mm) - CGA320 Valve of CO2 Tank (USA, CAN, Brazil, Colombia, Philippines...) Thread Type 2 (Outlet valve diameter 22mm) - DIN477 / W21.8-14 / JIS m22-14 Valve of CO2 Tank (KOR, JP, UK, Germany, France, Poland, Norway, Switzerland, Russia, Ukraine, South Africa, Sweden, Chile, Czech Republic, Singapore,,...)