The CJK Strokes block spans U+31C0–U+31EF, 48 codepoints in Plane 0 (Basic Multilingual Plane). 39 are assigned in Unicode 16.0; the other 9 are reserved for future characters.
All of its characters have the script value Common: they are shared across writing systems rather than tied to one.
By general category: 39 other symbols (So).
The first 16 arrived in Unicode 4.1 (2005); later additions came in 5.1 (20), 15.1 (1), 16.0 (2).
39 characters are East Asian Wide or Fullwidth and take two columns in terminals.