Electronic Torque produced by NIKSU Electric Tube Expansion Drive Unit is governed by a separate Electronic Control Panel which is adjusted by a simple Digital Display. When the Electrically Driven Motors reasches the desired Torque, the Control Unit Mechanism automatically shuts off the Power and on pressing the Reverse Button the Tube Expander retracts out from the Tube. The Fully Automatic system ensures the Tubes are rolled to maximum tightness without including excessive cold worked stress in Tube Metal. Injuring Tube ends or distorting Tube Sheet Ligaments.