乙烯基管，柔软，透明，12 x 15 毫米

排气橡胶管6×12mm 排气橡胶管4.5×15mm 排气橡胶管6×15mm 排气橡胶管4.5×18mm 排气橡胶管6×18mm 排气橡胶管6×21mm 排气橡胶管7.5×21mm 排气胶管9×21mm 排气胶管9×24mm