Watering Diffuser

Some practice modeling, right now it's labeled as a diffuser since that's what it may be most useful as.

--- Edit ---
Added a threaded version of the part and an outer piece it mates onto. I'd figure they can be readily modified and adapted for use in something.

--- Edit (5/12/2017) ---
Added new part versions "InnerHT" and "OuterHT". InnerHT is just sized to fit in OuterHT, and if OuterHT is scaled correctly then the other end should fit into standard hose threads. I'd guess this could be useful for watering plants or some such.