The Browguard with slip ratchet can be used to hold a wide range of face shields. Compatible face shields include the S580 (170 mm polycarbonate) / S590 (225 mm polycarbonate) / S591 (225 mm acetate) / S592 (225 mm acetate anti-fog) / S592AEA (225 mm acetate anti-fog <(>&<)> anti-arc) / S593 (225 mm green acetate). You can also choose from face shields S910 (150 mm polycarbonate) / S911 (150 mm acetate) / S912 (150 mm acetate anti-fog) which are suitable for attachment of an optional chin piece (S91C) to protect the entire face.