... type; 2> accessory equipment; Vertical double tray back twist+pair twist machineSPECIFICATION TypeVertical box typeMax rotation speedMAX1000RPMBacktwist ratioMAX90% Stepless adjustableMain ... ,4PAC motor Tentions range 200g,stable and adjustable Back-twist tension stand Vertical double head,tension wheel 120mm,3 ... ×2000) Total Weight Approx2200kg vertical double-tray back twist+pair twist cable machine