3M™ Speedglas™ Black Welding Helmet 100 with Auto-Darkening Filter 100V. 3M™ Speedglas™ Black Welding Helmet 100 with Auto-Darkening Filter 100V helps provide eye and face protection for worker safety while welding. The helmet comes ready to use with a lens offering three sensitivity settings: 1) Normal for most types of welding both indoors and outdoors, 2) A setting for when other welders are working nearby, and 3) a setting for low-current or stable arc welding.