Radical 129
Radical 129 or radical brush meaning "brush" is one of the 29 Kangxi radicals composed of 6 strokes.
In the Kangxi Dictionary, there are 19 characters to be found under this radical.
聿 is also the 145th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China, with and being its associated indexing components.