Radical 154
Radical 154 or radical shell meaning "" is one of the 20 Kangxi radicals composed of 7 strokes.
In the Kangxi Dictionary, there are 277 characters to be found under this radical.
贝, The simplified form of 貝, is the 76 indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China, while the traditional form 貝 is listed as its associated indexing component.