%EC%95%A0%EA%B2%AC%EC%9A%B4%EB%8F%99%EC%9E%A5 13mm%EC%87%84%EC%84%9D %ED%98%B9%EC%9D%80 %EB%8C%80%EC%B2%B4%ED%95%A0%EA%B2%83%EC%9D%B4 %EC%9E%88%EC%9D%84%EA%B9%8C%EC%9A%94%3F