The Browguard with rotary knob allows you to mount a wide range of face shields. For example, we can offer the face shields C1 (185m polycarbonate) / C2 (185mm polycarbonate anti-fog <(>&<)> anti-scratch) / C4 MAX (215mm polycarbonate anti-fog <(>&<)> anti-scratch) / C5 MAX (215mm polycarbonate anti-fog <(>&<)> anti-scratch). scratch + arc flash).