... vertical box type; 2> accessory equipment; Vertical double tray back twist+pair twist machineSPECIFICATION TypeVertical box typeMax rotation speedMAX1000RPMBacktwist ... customer requestBobbin weightrequirement <250kg,wire pay-off tension 3-10N Main motor 5HP,4PAC motor Tentions range 200g ... twist tension stand Vertical double head,tension wheel 120mm,3+4ditch,inlet linear bearing move up & down,precision ...