Masontops Pickle Pipe Fermentation Airlock Regular 4 Pack 3 "Good but...." Norma Laming 26 September 2017 In truth, both 5 & 3 stars. It's a brilliant idea: only just got mine but I've read a lot about them. Until now I've been using the Pickl-it method, which I imported from the US. Those use a traditional airlock- Pickle Pipes are simpler. BUT, if you like lacto fermentation then you need the widemouth jars & wide mouth Pickle Pipes /fermentation stones, because cauliflower, lemons, green beans, carrot sticks etc are fiddly to get out of regular jars. I suggest you get the plastic lids, if you like lacto fermentation as salt and metal aren't good. 10/10 to Lakeland for knowing about these!