Thanks for Shopping in our Amazon Store, we are a professional business company, we YUEWO have engaged in online business for about 8 years, we always providing the best products and the best service! This set of moonshine stills is a complete wine making sets, great alembic still for beginners or expert distiller, portable and easy to handle, and We have test everything when we sending the package out. We have continuously improved our products over the past years to make it easier for customers to use our distillation equipment. Fermenter pot is more 25% Thicker. There are 2 ajustable stainless feet under the cooling pot, can make sure the cooler stand on the fermenter pot steadily; embeded stainless buckle on the fermenter pot, and the integral seal O-ring, has a better effect on sealing. Boiler material: stainless steel. The cooling coil cooler: copper or stainless steel pipe to shape. Length: 170cm/67 inches for 2 or 3 Gal, 250cm/100 inches for 5 or 8 Gal. Construction: The construction is all Stainless steel which has been argon welded thus avoiding any of the health problems associated with copper and solder constructed stills. Welding technique: The item is argon welded to avoid any of the health issues associated with welding and solder constructed alcohol stills. Heat source: induction cooler, stove, or any other heating sources are OK! ★You will need (NOT include) : yeast, water supply, heat source (I suggest use induction cooker or gas stove) , all the items are the same the pictures showed, contact me anytime when you need additional help. ★NOTE★: You can use a water pump, but please control the amount of the water flow.