Our Covid Key is perfect for use at gas stations and grocery stores. It opens the doors in the freezer section, dairy dept, and main entry doors. Select your fuel grade, and tell that gas pump about your receipt preference 😉 Wipe it down with your favorite disinfecting wipe and go! It measures 4in by 1.5 in and is cut from 1/4” aluminum, so it's lightweight, and won't rust or leave any residue behind!