Thickness: 17 microns. Transparent elastic foil: 100% polyethylene, 3-layer cast. Excellent elastic memory. Spool length 300m. Width 45 cm. Cardboard, 6 spools. nontransparent elastic foil: Resistant to perforation. Nontransparent to preserve confidentiality. Protects against UV. Spool length 300m. Width 45 cm. Cardboard, 6 spools, plastic Roller: for spools Width 45cm up to 50 cm. Diameter 50 mm.