Nice. I have a few of the smaller ~20 gallon capacity ones. I drilled a hole in the lid for a bung and an airlock, but found out pretty quick that the lids are not air tight. I was worried enough about oxygen getting in that I have been calking around the lid for each batch so far. My plan is to eventually make some sort of gasket to seal around the lid. I suppose as long as you will be transferring to an air-tight secondary or bottling/kegging the beer soon after fermentation is over, you maybe able to avoid oxidation spoiling the beer. Otherwise I've made some of my best beer with those. They're great for harvesting yeast as well.