Our 1/8" Poly tube is recommended to be used with this manifold.
Each outlet has an independent emitter so you may run tubing of different lengths from each outlet. This also means that there is no bleed-over from one outlet to another.
The 8 rubber caps which are included allow you to seal off / shut off any of the outlets you do not need, up to 8 outlets may be sealed off. To take a cap off is done by hand and takes little effort. Unscrewing the top cover and then lifting the filter screen gives you access to the caps.
A truly wonderful feature of this 12 outlet manifold is that you may replace the emitters / drippers with different flow rates, mix and match flow rates as you like. To take out an emitter all you need is a paperclip to push it up from the bottom where the tube connects, push the new one down in the empty hole and replace the cover.