those are the ones, yessir. how did you find them so fast. have you used them. i have only used the one second from the left. i'm sure the others work fine also.
I'm not disputing the quality....just that I guess looks can be deceiving, especially to someone so used to seeing metal clamps and armored cable. I've always regarded tool-less implements with suspicion but I may be wrong about this.
The plastic sure seems to prevent the NM jacket from getting abraded on sharp edges.
Speaking of chintzy, the newer color-coded ROMEX sheathing still seems to be more fragile than the older sheathing. The cables seem less bulky, but there's something different about the material that is now used. The metal connectors will crimp right into the conductors if one is not careful!
i am leary of new fittings too and then i try em, and whatdya know they work great. they are made of one piece of pvc type plastic, no screwdriver needed, and are much faster and easier to use also. i gave up on metal romex connectors long ago.