Replacement solid steel drive shaft rod No4 for the main tube, featuring a total length of 76cm and an 8.25mm diameter. Engineered with dual spline ends (7-tooth / 7-sided spline on one end and 9-tooth / 9-sided spline on the other) for positive, high-efficiency power engagement with the bevel and helical gear assembly, fully compatible with PIONER gasoline pole saw CG33 1.6HP.