1 Gallon Cornies

Occassionally I see someone who has a 1 gallon syrup canister. They are really great for hauling a small batch of homebrew to a picnic or a party. They look like a small 3 gallon cornie without the black plastic handle. I never see them mentioned on the internet and when I try to find one on the internet I must be searching for the wrong thing because I get no results. What is their correct name? I've tried looking under cornies, cornelius kegs, soda canisters, syrup canisters but I never fing mention of the 1 gallon versions. I would appreciate your help and or advice where to find one.

That's a new one. I've seen syrups in 1 & 2 gallon bottles, but not stainless. I generally use 1/2 gallon growlers or some 1 gallon beer boxes I got free with the purchase of gallons of Racer X & Hop Rod Rye at Bear Republic.