Used to sample Beer or Wine or anything else you have in your fermenter. Simply sanitize, insert into fermenter, place your thumb over the hole in the top and pull it back out. When you release your thumb the sample will pour out of the bottom.
Glass Wine Thief also available.
Brian –
Not perfect but definitely convenient. I don’t get quite as much beer into it as I’d like, but you take what you can get I suppose. Protip: Hold it under (with your finger off the hole) for longer to allow the beer to fill the beer thief. The hole at the other end is small too. For a 6.5 gallon glass carboy, it doesn’t reach but a few inches into the beer (and thus requires multiple trips for a hydrometer reading). In theory I suppose you could buy two and attach two middle sections to it, but there are some physics that may prevent this from working and I don’t care enough to find out. That it breaks down into three pieces is extremely convenient.