... to operate and improve production efficacy ULUO6500 Electric screwdriver:Torque adjustable from 3-15kgf.cmTorque accuracy ±5%Easy to ... auto control design. When screwing has reached the stipulated torque, it will stop automatically, which certificate the screwing safety ... the operator’s tiredness.7) Have a high stable torque, certificating the screwing stabilization and safety.8) Supply electricity ...