High Speed Back-twisting Machine 1,For CAT5E,CAT6,CAT7 2,Motorized ... equipment,such as CAT5E,CAT6,CAT7 etc.2,Specifications: Machine modelVertical box typeMax rotation speed1000rpmBack twist ratioMax 90% ... wheel 120mm,3+3 ditch,pecision potentionmeterPay-off deviceAccumulative type tension sensor stand,inked with pay-off motor, ... tansion HR-DB-500/630(bobbin size) High Speed Pair Back-twisting Machine