Duble safety protection Frame can be flipped for easy observation, lens size: 7-13# optional ApplicationsWidely used in high-altitude operations ... safety protection needs, suitable for Tig welding, Mig welding, Arc welding, and plasma cutting etc. Specifications1). Frame can be ... , face from injury by welding spatter and strong arc.3). International standard lens size,suitable for 7-13#.4). Edge with ...