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_21021796_1 ( torque VARCHAR, stroke VARCHAR )

### Question ###
List the torque possible when the stroke is 88.4mm?

### Accurate SQL ###

SELECT torque FROM table_21021796_1 WHERE stroke = "88.4mm"