I had a four point lift system that I used in the garage at my previous house , I took it with me to my new house and when I thought about reinstalling it I remembered how I always was afraid it would fail. I searched for "jeep top lift" and found TopLift Pros, and after watching the video I purchased the Lift and the door holder. I put it together in a couple of hours, lifted off the top and headed to the beach. Absolutely the best purchase I have make since getting my first Jeep!