3pak Plastic CARBONATION & LINE Cleaning Cap,Carbonation Cap 1/4" Barb, Ball Lock Type, Fit Soft Drink PET Bottles

These work really well, I will buy more.

These work well enough, but are not the same as the kegland caps. I couldn’t tell what the material difference is, but kegland a are supposed to be very chemical resistant and can take extreme temperature and pressure.Main problem with these is that they are quite difficult to connect to the black/water connections. The grey/gas connections go on fairly effortlessly(like it should). I’d return them if they were as difficult to disconnect, fortunately the black/water connections disconnect with little effort.I am not using the threads on these, so I’m not sure how well they seal. I am using two with a female to female duotight coupler, and one of them as a lead in for a gas splitter.

I have had a long while of consistent excellent carbonated beverages thanks to these, would recommend.Caution: be careful when you first use them, they may need a break-in period where they don't seal completely.

These caps are slightly too large to fit into ball lock fittings. Only one out of 3 actually fits. I will buy name brand next time

When I got into making hard cider I didn't even consider carbonating, but now I rarely drink it flat.I've been able to try all kinds of drinks carbonated using these caps to do small batches.