About this item CHANGE WHEN DIRTY – Keeping dirty lenses can damage your eyes from strain and cause your auto darkening welding lens to flash due to covering sensors STANDARD SIZES – Our 2×4.25 clear welding lenses are always the proper size and will fit every standard welding helmet with ease ULTRA CLEAR – We use special manufacturing methods to ensure your welding clear lenses never come warped, cracked, or creased NEVER COMES SCRATCHED – Our FOUR layers of protection will keep your clear lenses safe from scratches in the shipping process, as well as during storage Z87.1 STANDARD – All of our clear welding lenses are up to Z87.1 STD, and are perfectly safe for your eyes