Huntsman 951 P/1105 VXL Welding Helmet - 4-1/2 x 5-1/4 Auto Darkening Lens

4-1/2 x 5-1/4 Auto Darkening lens with 2.4 x 3.8 viewing area. Provides a high speed filter with fine tuning controls - shade 9-12. Sensitivity adjustment that controls the amount of light required to switch from light to dark and dark to light. Automatically lightens up to a shade 2.75 for prep work. Battery operated. Auto Darkening replacement lens available # 33097.