Hardened Weld-Cool Plate is size 2″ x 4 1/4″, No. 274,  Shade 12.  Scientifically developed to protect welders against harmful ultraviolet and infrared radiations and to provide increased visibility of the welding operation – resulting in better welds.  Particularly adapted to semi-automatic and  processes where excessive heat is present.  Provides visible light transmission in the blue region of the spectrum and absorbs the yellow flare associated with certain welding processes.  Provides the welder with cooler, more comfortable and efficient protection.   $52.95