Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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?
### Answer:
SELECT for_shank_type FROM table_28652521_1 WHERE storage_case = "red plastic box"