This secures the hatch, but doesn't lock it if you see what I mean. Operable from both sides
Like the circular flush rings, the small ones need small fingers
Attractive, but remarkably fiddly to fit. Also the smaller sizes are suitable only for the smallest fingers
Quite clever really, the ring operates the latch. Recommended for relatively lightweight applications, though.
A neat alternative to the flush rings also featured in this section. They do need a good depth to accommodate them, but they are reasonably robust, and don't trap dirt.
I'm not sure these really qualify as catches, but what the hell. Used not only for table legs, but wherever a robust removeable fastener is needed