From HEMSCO SUPPLY: Replace welding helmet lenses on a regular basis to ensure the best quality. Our Forney PRO Series Lens Kit (2 Inner and 3 Outer), 5-Pack is designed to protect your auto-darkening filter (ADF) from weld spatter, ensuring optimal performance and longevity. This kit fits all Forney PRO series auto-darkening welding helmets, including ITEM#'s 55935, 55936, 55937, 55938, and 55939. Invest in superior protection and clarity with our premium lens kit, tailored to meet the high standards of professional welders.