This insert seems to have it all and works great out of the gate but then you use it for a week. The lighter begins to fail faster and faster until like another poster said it raises your blood pressure. I found if you don't use zippo butane and you fix the governor that is under the rubber o ring it will work fine. Mine has been working great for a month since I did those two things. I would buy this again since it is under 20 but if was more then that I wouldn't.