Two for one twisting machine for industrial yarns and heavy deniers of polypropylene, polyester, polyamide, viscose, aramid yarns wound on large supply and take up package, both easily operator accessible. The large supply package and heavy deniers require a sturdy machine frame, double twist spindles that are easily accessible by the operator and an adequate take-up cradle with double braking, suitable for high take-up speed when the processing is with low twist. The R 341 DT can be equipped with spindles for bobbin ranging from model NT 180 to NT 330 for counts up to 5.500 Dtex, wound on package up to 320 [mm] diameter. Giant spinning mill cops with length up to 500 [mm] can also be used. Under request, the machine is also available for direct cabling: model R 341 CB.