The securing grub screws are stainless steel. The screen is thick and durable, and the whole thing does what it is supposed to. I bought it to see if I would like it, and to see what difference it would make to wind flow. Air is now deflected over my helmet. The only downside is the central mounting casting can be intrusive to one's sight line. I got over this by dropping the screen a little, and by turning the deflector vertical it compensated for the drop, and gave the same airflow. For the money, unbeatable.
Verified purchase: Yes | Condition: New
does what was advertised and is strong and tough
Verified purchase: Yes | Condition: New
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