“The “dual speed” gearboxes W3300 DS, W3450 DS and W5200 DS have been derived from the standard MASSON-MARINE W3300, W3450 and W5200 gearboxes. These DS gearboxes feature an additional idler shaft, providing the gearbox with two distinct gear ratios. For very specific projects, this additional idler shaft can be used to plug a PTO/PTI.”