That is the brand new tab that John told me about a couple weeks ago when I called him about a cylinder problem I was having. I have the standard set and they are great, everything they are advertised to be. I would say buy them from my experience with the standard set, call John at Nauticus, he owns the company, good people and stands by his product. 1-800-233-0194, hope it is okay for the phone number since John does not sell direct to end user.