型号选择方法 适用卡簧直径:10~25mm,适用耳洞:1.0~2.0mmV-MP80,V-MP81,V-MP82,V-MP83,V-MP80S 适用卡簧直径:10~25mm,适用耳洞:1.2~2.0mmV-MP170,V-MP171,V-MP172,V-MP173,V-MP520,V-MP521,V-MP522,V-MP523 适用卡簧直径:6~20mm,适用耳洞:0.8~1.7mmV-MP170F,V-MP171F,V-MP172F,V-MP173F 适用卡簧直径:12~65mm,适用耳洞:1.5~2.5mmV-MP175,V-MP176,V-MP177,V-MP178