This is a necessary part if one wants to serve from the WW BrewKeg10. The original for my keg dropped out of position and fell into the collection ball. It was damaged (pinched but still useable) when I closed the keg’s butterfly valve. The tube works well and I fault myself for damaging the original by not ensuring a solid connection. I am replacing it to eliminate a possible gas nucleation point during serving. My only gripe is the expense.