The PLD-57 Pre-Printed Conductor Ground (ISO 3864) Symbol Label is constructed from a laminated material that protects the legend from abrasion and chemicals, resists UV light, chemical atmosphere, and abrasion; excellent life and adhesion properties. Polyester. 0.75" x 0.75" (19 mm x 19 mm). Color White. Legend: Green. 300 labels per package.