This is a genuine Chapin part made for backpack sprayers. It is a 20" wand made to fit onto the trigger handle with a nozzle fitted onto the tip. Note that nozzles are sold separately, with many various types and strengths available. One wand is included.
Genuine Dewalt replacement part, this item is sold individually. The purpose of this Cord Clamp is to hold the cord in place inside the tool to keep it from pulling out. It is installed just inside of the handle. There are two screws used to hold the Cord Clamp in place. The part number for the screw is different depending on your model number.