* This welding rotator seti includes 1 x powered roller ans 1 x non-powered roller, Wheels are PU coated * Suitable for pipes from 250mm t0 2800mm * The main roller is powered by 2 x 0.55kw AC steeper motors though a comtrol box with didital display attached * The whole design of the control function buttons on the hand control box, Indirectly via potentiometer adjustment of the current welding speed * Welding speed can be pre-adjusted in advance * In the manual control box can be displayed by the digital display table when the frequency of the motor is running. * The opperation fuctions are all on the hand remote ** This model has central screw to adjust the roller centres by handwheel **