reated FiberglassSize:4’x 6’thickness:0.6MMworking temperature:550Cbrass grommets on each sideThis welding blanket made from heavyweight, flame-retardant fiberglass providing protection to equipment and work areas from damage from sparks and spatter.Size: 4FT x 6FTThickness: 0.6mmWorking temperature: 550Brass grommets on each sideWelding blanket is a must have piece of safety equipment if you are doing any type of welding.Genuine Neilsen Product