Sorry, I'm sure this has been asked before, but I did a little searching and got nothing (or rather I got too much, but not the answer to my question)... I got a '77 P-Bass today which came with a set of flats on it, apparently a 40-100 set (I had it calipered at Rudy's). The silk at the ends is black and the ball ends are brass. Not all brands listed on juststrings.com have a 40-100 gauge, so that narrows things down a bit. Do D'Addarios have colored ball ends - that should eliminate them, right? Obviously I like the way these feel, and I don't want to go through an expensive round of trying all the brands to get back here when it's time for a string change... Thanks for any suggestions!