Are Your Brake Lines Protected?

I mean with that outer coil spring stuff. I see it on the '65 Valiant Signet convertible (photos #1, #2, #3), but don't see it on the 8 3/4 swap for the '65 Formula S (photo #4) , nor on the '72 Satellite Sebring Plus (photo #5). Are the "protected" lines sold in the aftermarket?

brake lines 1.JPG

brake lines 2.JPG

brake lines 3.JPG

brake lines 4.JPG

brake lines 5.JPG