500ml Amber flip-top with smooth, slightly tapered sides. Price includes 12 complete tops which are packed separately. These are great if you want to avoid the hassle of crimping crown caps on regular bottles and constantly buying more caps. You can also use these bottles as growlers for fill and go off your keg taps. The downside is that these bottles cost more up front and you have to chase your friends down for the empties.
You'll need 3 cases for a 5 gallon batch.