Those are the shocks for the 3" lift. The best all-around to use with the coils for up and down travel. Usually with VT coils and those wanting to go with full long travel, they would run our 4" or 6" shocks, but it all depends if you want to add all the other parts to handle the full down travel. You also have to add bump stops, so you lose up travel, but gain more down travel. You can gain one thing, but lose something out, so you have to choose which balance you want to go with.
Rock crawlers and flex-addicts, go with the 4" or 6" lengths, but overlanders and family trucksters, I usually recommend the 3" shocks to go with the 3" lift and not have to add all the other parts for long travel, since they don't need the extra down travel and reduced up-travel.