This genuine Ryobi replacement part is designed for use with on a variety of power tools. Over time batteries will become weaker and eventually will not provide enough power to operate the tool as it was designed. Several factors can cause this, such as improper charging or the way the tool is used along with normal deterioration of the battery. This item is sold individually.

This is a genuine Ryobi replacement part, it is sold individually.
The purpose of the Atomizer Valve Assembly is to force the liquid that is in the container out of a very small hole so that it becomes a fine spray.
This part does become clogged if not cleaned on a regular basis.
It is advisable to have an extra one on hand.

This is a genuine OEM replacement part, it is sold individually.
The purpose of the O-Ring tip is to create a seal between the spray gun and the Saddle Tip.
These do have a tendency to wear, it is advisable to have one or two to keep on hand.

Genuine Manufacturer Sourced replacement part used on some Paint Sprayers. This item is made out of Metal and it is sold individually. The purpose of the Saddle Tip is to hold the nozzle in place and protect it.

Genuine Milwaukee replacement part, this item is sold individually. This part filters out impurities and other debris from enter the spray gun.
This part does get replaced often, it is advised to have an extra one or two on hand for future use.