The present invention provides a process for the manufacture of trans 1-chloro-3,3,3-trifluoropropene. The CE is improved in that the aluminum containing feedstock is prepared in a manner where it contains substantially no humidity or water before it is fed to the cell, where the electrolytic process is carried out at conditions with reduced amount of hydrogen present. The ultrasonic probe thus constructed makes it possible to reduce the rotation radius of the transducer independently of the size of the electric motor by spacing the rotation axes of the drive motor and the transducer in order to provide an ultrasonic probe smaller in size. For the carbon steel, one containing 0. The motor further includes a plurality of switches configured to generate the magnetic field in each of the respective rotor and stator coils. A rod holder may also be used to insert a rod into the head of the screw.