What really sets The Brew Bucket apart from other fermenters are features such as stacking during ferment or the included rotatable racking arm and ball valve spigot assembly. What other fermenter on the market allows you to stack one on top of another even with airlocks plugged into the lids? This is 6.95 Gallons. The Brew Bucket's conical bottom allows trub to settle out nicely in a more concentrated space and has the effect of minimizing the surface area of your beer that is in contact with the trub during ferment, which then minimizes off flavors in your beer. This bucket has a conical base. It's made of 304 stainless steel, integrated racking arm / ball valve assembly, stackable design, and conical bottom.