Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
변구경소켓을 사용하여 파이프의 크기를 줄였습니다.byeongugyeongsocket-eul sayonghayeo paipeu-ui keugi-reul julyeossseubnida.I used a reducer to decrease the size of the pipe.