Welders, this one's for you! These welding helmet protective lenses are consumables you go through regularly, so having a 10-pack (5 outer covers at 5.35\ x 4.76\ and 5 inner covers at 4.1\ x 3.4\) means you're set for a while. Made from tough polycarbonate material that's clear, lightweight, and blocks about 30% of radiant heat to protect your actual auto-darkening lens underneath. They fit most standard welding helmets (just check your sizes first). The outer lenses take the brunt of the welding spatter and sparks - when they get too scratched or dirty, you just peel off the protective film on a new one and swap it out. Keeps your view clear and extends the life of your expensive auto-darkening lens. Don't wait until your view is completely obscured by scratches - change these protective covers regularly for better visibility and safety. Includes films on both sides for protection during shipping. From TRQWH with a 1-year warranty. Because clear vision means better welds and safer working conditions. Stock up now and keep welding!