Cylinder Holder, Bracket, Steel,Rubber, 14 1 2 in to 15 1 4 in dia no checkout radiation Good blue light protection Decreases total radiation Good blue light protection Decreases total light from welding arc Good visibility into higher amperage welding areas For medium to medium high amperage in electric arc welding corrosion and galling where high temperature conditions exists Contains a high percentage of micro fine copper flakes in a semi synthetic grease carrier Fortified with high quality rust and corrosion inhibitors Rubber gasket on the inside of the holder eliminates all concern of friction and noise Holder is hinged and swings back giving you access to the tank much quicker and easier than chains and makeshift methods