Just to say that I'm still curious about this 1k/3k combo. I've used the Suehiro 1k/3k combo over the past three years and really love it followed by a coticule. So why change it if it works? To try something different, and the Naniwa 1k/3k, at 2-1/8" x 6-7/8" seems tailor-made for hand-held honing.