I bought this barrel from ebay. It’s a 5 litre oak barrel, possibly a bit of a cheap low quality product that might look shabby before long. These would normally be used to hold your wine as they have a wine cask bladder inside.
The walls are 10mm thick oak with some kind of cheap laminated board on the ends. The tap is plastic.
I made a hole in the back and removed the wine bladder. I ended up making the hole a lot bigger so i can eventually transfer some bees in to the barrel. Once this has bees in it, it would be best to position this under cover in a patio or verandah to protect it from the sun and rain.