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_name_49 (diameter VARCHAR, year VARCHAR, reverse VARCHAR)

### Question ###
What's the diameter of the 2006 equestrian Reverse?

### Accurate SQL ###

SELECT diameter FROM table_name_49 WHERE year = 2006 AND reverse = "equestrian"