Heavy Insulated AWH & AIH are heavily Insulated wide Tapes, for use on conductive surfaces.(such as metal) They are fabricated using two wire construction and have leadwires on one end. AWH AMOX tapes are capable of use to 1400 Deg. F. (760 C.) AIH Fiberglass tapes are capable of use to 900 Deg. F. (482 C.)