Yes! It is a 2 gal. round cooler. I used the nipple waterers, and an
adapter made for this purpose. Note, if you use a small round cooler (like mine), you will also have to buy thicker rubber washers ( plumbing dept. in home depot or other plumbing supply store) to seal on the curvature. A small square cooler or a large (think team gatorade size) cooler is easier. That said, I didn't want a huge one as it would just plain old be too hard to move around once full.
There is also an
adaptor that can be used with small round coolers - a screw in one that replaces the pour spout. (That said, it is a bit price, imo). I tried one of these as well. For you this would be GREAT! for me, it is thought of/used as a back-up waterer, as having only 2 nipples really restricts how many can drink at once - not good in heat. I will take and submit a picture of this one later.