1bGA Inner Profile Tube (Lemon style), with drill hole. Profile tube has a rilsan coating. The rilsan coating creates a low friction surface which reduces thrust loads. 39.5 mm O.D., 4.5 mm Wall Thickness. 1000 mm Length. Replaces Walterscheid No. W047901. Fits Vermeer Round Balers; Walterscheid WWE & WWZ series.