Uchimaru Kanna (hollow) 18mm
A hollow soled plane used for rounding over edges (bullnosed shelves for example) or creating convex portions of mouldings.
Body length 143mm
Body width 29mm
Blade width 18mm
Edge Width 18mm
This is an excellent series of videos by Sumokun that explains the process of setting up a Kanna in English (watch the first video, then the third, then the second).