I bought a set from [Costco](https://www.costco.com/.product.4000026930.html?adobe_mc=TS%253D1750000588%257CMCMID%253D75813464985911754425972737655659696029%257CMCORGID%253D97B21CFE5329614E0A490D45%40AdobeOrg&mboxSession=02c5263f-11bd-4a47-86de-cf1238871608&sh=true&nf=true) a few years ago. Never used them much but if you got that route at least you can return them if they crap out in a few days. They are not twist locks, they are like a tripod latch.