Inner Profile Tube, w/ Drill Hole, S4GA, : W333336. Fits Walterscheid WWE & WWZ Series., Dim B (2): Rilsan Coated, Notes: use w/ outer tube type S5, Replaces: Walterscheid Part No: W333336, Size: (A) 51mm, length 1000mm, type S4ga, Web Notes: a Teflon like coating that creates a low friction surface which reduces thrust loads. S4ga profile, Web Notes: S4GA Star style Inner Profile Tube with drill hole. Profile tube is Rilsan coated (Rilsan coating is, Web Notes: tube has a 51 mm O.D., 1000 mm length. Used with S5 outer profile tube. Replaces Walterscheid No.