The NPVF050YW-100 is a yellow Wire Marker Label made of polyvinyl fluoride. The 583910-000 NPVF series Tedlar® is a non-printable tape designed for use as a color-coded identifier for cables/cable bundles. Besides identifying the bundle this product is wrapped around, it also provides strength and rigidity to the bundle. The product has all the features of the VF series of Tedlar® products except for printability.