... thickness: 45-50um 3:Tack: :300-450g / 25mm DUST DRUM:1: Material:: Polypropylene Second,2:product performance: thickness: 45-50um3 ... the strip, easy to tear off, the size used in different occasions;7: the scope of application: Widely ... used in semiconductor, PCB (printed circuit board), LCD, glass, ... , size 4 "6" 8 "10" 12 "16" 21 . " Dust drum