Hi all, I purchased a box of used gut strings. Among them I have a plain E and A, and I am loving this particular A. I prefer it over my pistoy. The E maybe not quite, but still going through this box. I took a picture of the E because it looks just like the A (and the A is on my bass and harder to see). Is this loop at the end indicative of any particular brand you know of? I'd love to find additional ones if I ever break this one.