The Speedglas 100 Black Helmet with Auto-Darkening Filter 100V is good for Stick, MIG and most TIG welding processes. User selectable dark shades 8 through 12 and viewing area of 6.05 sq.in. It has three user-selectable sensitivity levels for reliable arc detection and has excellent optical quality. It is shade 3 in the light state. Hardhat adapter included. (Hardhat sold separately) Benefits Hard Hat Adapter 1.73 x 3.66 viewing area Excellent optical quality Sensitivity adjustment allows use with most Stick, MIG, TIG (>10A)