Conductor Drum Lifting Jack Conductor Drum Lifting JackTTST - DLJ Suitable for wooden or steel conductor drums with traverse width ranging from 700 mm to 1300 mm for tension stringing. Mild Steel Solid Shaft Diameter 56 – 57 mm. Manual lifting through screw gear mechanism, One side disc brake. Adjustable height center shaft to ground ) from 780 mm to 1450 mm. Supplied with hard forged steel jaw & adaptor.