this 3M tape is not what it should be . there is no release liner on one side of the tape . the inner side of tape is naked and has adhesive exposed on it that means there is release liner /backing only on one side where as 3M tapes are dual side adhesive with release liner on both side . now when you open the roll and the adhesive is already exposed and you can put the tape accurately on the sustrate as it will stick straight away on the substrate. feel like i have been cheated !!!!