Convenient， disposable， lint-free cleaning pads are pre-moistened with 91 percent isopropyl alcohol and 9 percent deionized water. Excellent for precision cleaning of tape heads， guides， capstans， plastic rollers and disk pack platters. Safe， effective solvent cleans and evaporates in seconds. Pads will not affect reading/recording of data. Individual， hermetically-sealed foil packets keep each pad fresh and easily stored at the work place.