RADNOR™® by 3M™ Speedglas™ RS-700 Welding Auto Darkening Filter RAD64005246, 1 ea/Case. This polycarbonate 3.66" X 1.73" viewing area lens is good for most stick, MIG and TIG welding processes. It provides excellent optical clarity, auto-darkening shades 8-12 and sensitivity adjustment, including grinding mode. Low battery indicator.