THIS ITEM IS NOT A HELMET, ONLY A PAIR REPLACEMENT FASTENERS
Body & knob made from light weight 6061-t6 aluminum. Item surface was anodized to create an glossy film which won't grow dark after long-time service
Fit for flip hood and replace easily damaged plastic fasteners. Fit for Fibre Metal 2090 with 3C headgear too
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 strong.
Don't settle for other cheap and low-quality knockoffs fastner that will not last long. Please identify 3mirrors brand before purchase to save your money and time. Thanks!