One would like to have a pair of scissors to cut the tape halfway clean. Why should that be necessary?
The above was written immediately after the delivery. Now, after more than a year, I can only deduct two stars on. The tear bar is a cheap piece of metal, which hardly meets its purpose already in new condition. After prolonged use, you can deduct all the sheet (goes easily with your fingers) and throw it away, because without scissors, you can not disconnect the tape.