It is a cartridge chambered in the CZ75B, a very fine handgun. Mine will never be used to shoot bad guys so that isn't really an issue for me. Never had a popcan walk away way from a hit with mine.
I can't recall the last time I used a 9mm wrench, socket, or anything. The Asian stuff is like 7-8-11-12-14-16 and the domestic stuff is 8-10-13-15, most of them skip 9mm, like me.