Feature●Delay control enabling the welder to set how long the lens stays dark after the welding arc stops; Short delay helps get the job done faster during tack welding, while longer delay is useful for high amperage welding●Four arc sensors for higher auto darkening response●Sensitivity control is an adaptable feature useful when welding low amp TIG for better reaction to darker arc light●Adjustable sensitivity control for TIG welding in the low rim range for better adjustment to the arcDescription The ESAB Savage A40 Black auto-darkening welding hood offers a True Color view of the weld puddle for less than $100. The optical class 1/1/1/2 lens features welding shades 9-13 with shade 4 external grind control. The Savage A40 lens has a full 7.70 square inches (3.93 x 1.96) of viewing area and four arc sensors. The ADF has a low amperage TIG welding range down to 5 amps. It is ideal for the occasional or the professional welder.