Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28652521_1 ( for_shank_type VARCHAR, storage_case VARCHAR )

### Question ###
What's the shank type of the buttonholer with red plastic box as storage case?

### Accurate SQL ###

SELECT for_shank_type FROM table_28652521_1 WHERE storage_case = "red plastic box"