Lightweight, easy to use clip on welding adapter can be used in conjunction with the 3M Full Facepieces and is approved in all modes of operation as an accessory product. It is compatable with standard 4.5 by 5.25 inch lens.This lightweight, easy to use clip on welding adapter can be used in conjunction with the 3M Full Facepiece 7800S and is approved in all modes of operation as an accessory product. It is compatable with standard 4.5 by 5.25 inch lens. Also can be used with the 3M Electronic Lens Assembly 7991/7991 AM. The large viewing area enhances wearer safety.