The tip with the wrap or maybe the "terminator" of the foil at The bottom of your strip next to the outer jacket is usually not easy to see and to find. If you could find this "terminator," you could nick it with a small Minimize with a knife and https://sites.google.com/view/dienphucthinh/oc-siet-cap-chong-chay-no-dien-phuc-thinh