sapphireSapphire glasses by Sternkreuz Subgroups Sapphire Glass Round Flat 0.8 - 1.0 mm nameVersionthicknesssizeitem No.SRflat0.8120-165 (alle 5/10), 170-210 (alle 1/10)SR170SRflat0.9211-250SR211SRflat0.9251-280SR251SRflat0.9281-320,325,330,335SR281SRflat1.1340SR340SRflat1.1350SR350 Sapphire Glass Round Flat 1.4mm nameVersionthicknesssizeitem No.SRMflat1.4260-290SRM260SRMflat1.4291-320, 325, 330, 335SRM291 Sapphire glass Round domed 0.9mm nameVersionthicknesssizeitem No.SRDdomed0.9260-290SRD260SRDdomed0.9291-320, 325, 330, 335SRD291 sapphire crystals special for RX (Generic) complete with gasket. nameVersionmaterialdiameterheightseriesitem No.XSR/Lwith loupesapphire2161.525-206 CXSRL216XSR/Lwith loupesapphire2571.525-246 CXSRL257XSR/Lwith loupesapphire3062.0025-295 CXSRL306