CREATE TABLE table_13555999_1 (junior_high_school__12_15_yrs_ VARCHAR(255), gender VARCHAR(255), specification VARCHAR(255))
What amount is the junior high school where the gender is male and the specification is minimum diameter of sakigawa?
    
SQL: SELECT junior_high_school__12_15_yrs_ FROM table_13555999_1 WHERE gender = "Male" AND specification = "Minimum diameter of sakigawa"