Welding lens, 2" x 4-1/4", Shade #9

Welding lens, 2" x 4-1/4", Shade #9 • Darker shades are for intense welding at higher amperage or in sunlight. • Lighter shades are for simple welding and indoors. • Begin with a shade too dark to clearly see the weld zone. Then step down to a shade which clearly shows the weld zone. • Lens selection chart: shade # 9 - amps arc 20 to 40, amps mig 40 to 80, amp plasma 10 to 15.