New Fast Metal Red Speed Demon Flash Beryllium Polarized Lens Eyewear
Fast Metal frame and temple uses a dove tail temple miter instead of straight edge cut. This was taught many years ago in the aluminum frame making that the hinge could be not as strong as the frame. So we created a dove tail cut and only one hinge that use 2 screws per side, to secure from coming a part. Another unique feature about the all new Fast Metal brand is interchangeable lenses. We were the first and probably the last to make a patent pending aluminum frame that can easily remove and replace lenses.FEATURES :
- Made in USA
- Aluminum 7075 Aluminum Alloy
- 7 Barrel Hinge, Dual Screw
- Curvature Type: 9 Base lens, High Wrap, with the option to interchange lenses
- Test to SEA/ANSI Z87.1-2015
