New Design! For Aluminum gas welding: Cobalt Blue filtered gas welding glasses specifically designed to filter out and allow proper viewing of puddle while welding aluminum alloys and the use of most fluxes. These glasses will provide effective eye protection for all gas welding as well as plasma cutting needs on any alloy. One size fits all. For metal shaping, metalworking, thin gauge sheet metal fabrication, auto body repair and restoration. Made in USA. Also included a free copy of our gas welding aluminum guidelines.