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% ... stand,inked with pay-off motor,ensure constant tension in pay-offMachine dimensionL*H*W 2100*1300*2000Total ... constant tansion HR-DB-500/630(bobbin size) High Speed Pair Back-twisting Machine