Servore Auto Shade Darkening Welding Goggle Arc-513 + Arc513 Shield World's First Tig The color of the product will be sent by random. Arc-513 Goggle + Arc513 Welding Shield Package. Goggle products do not come with auto power on function. This button is to turn on the power. Shade level can be adjusted in 5 levels from #5 to #13 according to welding type and current The product has been designed to be used for grinding purpose with #4 shade of darkness for goggle