These are replacement sway bar end links for guys running tall leveling kits or extended travel upper a-arms. These are 1/4" to 1" longer than stock to prevent the endlinks from rotating past the center point on full suspension extension. These will work on all of the Nissan truck platforms. These ship ready to install on the Titan/Armada platform, to fit on Frontier/Xterra/Pathfinder they will need to be adjusted to the shortest setting and one link rotated....very easy to do. See the last pic. 
NOTE: one of our competetors is now selling a version of these links...They do NOT use teflon lined bearings, they do NOT provide washers for both sides of the mount and, although they sell thier version for $5 less, they charge well over $20 for slow-ass ground shipping.