The brewing belt is an electric heating belt that can be adjusted to fit a 5-9 gallon plastic fermentation tank.Designed to help maintain the lowest fermentation temperature, the brewing belt raises the temperature to 10 higher than the ambient temperature of the room.If you are going to ferment in the basement and only need a little extra heat when the temperature drops, it is perfect.Plug Type:US Plug,it applies to Canada, India,Mexico, Taiwan, Thailand, the United States, the Philippines and so on.size:Length: about 2mMaterial:Silica gelcolour:BlackPackage Contents:2 x heating belt2 x Temperature barOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.