防冻套管，长度100M，适用于各种线号打印机，型号有：FD-2.5/直径3.9FD-0.75/直径2.8FD-1.5/直径3.4FD-1.0/直径3.0FD-0.5/直径2.2FD-8.0/直径7.0FD-6.0/直径5.4FD-4.0/直径4.6)