High Speed Back-twisting Machine 1,For CAT5E,CAT6,CAT7 2,Motorized ... producing of data cable, for core wire pair twisting with back twist equipment,such as CAT5E,CAT6,CAT7 etc.2,Specifications ... 120mm,3+3 ditch,pecision potentionmeterPay-off deviceAccumulative type tension sensor stand,inked with pay-off motor,ensure constant tension in ... HR-DB-500/630(bobbin size) High Speed Pair Back-twisting Machine