Likely the reason Paul's Finest in Canada does not recommend the 16K for razors and has done so for a few years now.
Bob
Yep, I noticed that at Paul’s Finest too.
Most all of us hone razors on Glass Stones that Shapton does not recommend for razors, you have to especially for any coarse work. I just got a Glass Stone 320 for a really bad kamisori that I’ve been working on.