If you look at the box carefully it says 60mg/ml on Revolution box. This doesn't mean each tube contains 60mg Selamectin. It rather means the formula is 60mg Selamectin for each ml. Each Revolution tube contains 0.75 ml liquid not 1 ml. Therefore there is 45mg Selamectin in each tube. In contras due to regulations in Europe and some other markets, Stronghold displays what is in tube (45 mg selamectin in 0.75 ml tube) rather than the formula ( 60mg per ml). Both products contains 45 mg active ingredient in 0.75 ml liquid in each tube.
By Wntetrault on 21 Mar 2015