shocks. 
This Assembly allows the shock piston to have a jet vent oil flow for better damper characteristics. 
Jet vent 

FEATURES:

titanium construction
White Teflon Machined jet vent Pistons. 
Jet vent (the hole is taper, to give you a faster return rate install with the small on top and the large end face the bottom. )

YOU WILL RECEIVE:


everything shown in the photo 
You get two shafts and two pistons. Order two sets to complete one truck.