Use on 3M™ Full Facepieces 6000 Series to help protect the lens. The 3M™ Faceshield Cover 6885/07142 (AAD), Respiratory Protection Accessory helps protect the lens on the 3M™ Full Facepiece 6000 Series (sold separately) from scratches, chips and dust. The cover is made from a soft material that never scratches and gently shields the lens. This accessory helps protect the investment made in respiratory equipment.