PVC COVER is a sparking optically clear plastic film. It is normally used in the office product industry.This listing is for:A4 Clear PVC Binding Covers - For All Comb Binders - 250 Micron - 100 Pack Features of this product include:MY Industrial PVC Binding CoversColour: Clear Material: PVC Thickness: 250 micronSize: A4Pack: 100pcs/opp bagThese binding covers are for use with all comb binding machines.