... flipped for easy observation, lens size: 7-13# optional China TIG/MIG/ARC/PLASMA welding Safety Welding Helmet ApplicationsWidely used in ... other operating environment with stronger safety protection needs, suitable for Tig welding, Mig welding, Arc welding, and plasma cutting etc. ... transmittance 780-1300nm<=0.003%,1300-2000nm<=0.009 China TIG/MIG/ARC/PLASMA welding Safety Welding Helmet