To use your extended length gravel tube.Push bare end of tail onto the nipple end of the gravel tube.Unthread the existing gravel tube and tail from the switch and replace with the extra length gravel tube and tail.Made in the USA.
Python No-Spill Clean & Fill 24" Gravel Tube
Dimensions: 24"Length
Python No-Spill Clean & Fill 30" Gravel Tube
Dimensions: 30"Length