It is 18g, and I think all of my string going forward will be. I still have about 1/2 a reel of 17g Dunlop Biomimetic Syn-gut and 1/2 a reel of 17g Gamma Zo Verve. But as soon as those are gone, it's 18g for me. I like the feel better.
Evil doers ... you face The Tick!