This helmet hasteners does not fit for 3M Adflo, Speedglas 9100fx, Miller Infinity series, Lincoln K2800-1
Body & knob made from lightweight 6061-T6 Aluminum, Better than plastic. Say goodbye to the worries of stripping out of your helmets. The fastener's screws surface was anodized to create a glossy film that won't grow dark for long-term use
Fit the flip hood and replace easily damaged plastic fasteners. Fit for fiber-metal 2090 with 3C headgear, too, welding hood fasteners, pipeliner, and other welding helmets
Due to different helmet designs, if you want to make the fasteners tighter, it's recommended to put 1/4" external tooth lock washers on them, and they will hold very strongly. See our customers' experience sharing
If you have any more questions about this Welding Hood, please feel free to let us help. Thanks