LensGuard High Performance Optical Coatings LensGuard 500 Eyewear Coating Series LensGuard 501 ------ Eyewear Hardcoat - High Abrasion Resistant–Non Tintable LensGuard 502 ------ Eyewear Hardcoat - Abrasion Resistant – Non Tintable LensGuard 503 ------ Eyewear Hardcoat - High Bayer–Non Tintable LensGuard 504 ------ Eyewear Hardcoat - Mid Bayer–Non Tintable LensGuard 505 ------ Optimum Eyewear Hardcoat - Non Tintable LensGuard 506 ------ Eyewear Hardcoat - High Abrasion Resistant– Tintable LensGuard 507 ------ Eyewear Hardcoat - High Abrasion Resistant–Tintable LensGuard 508 ------ Eyewear Hardcoat - High Bayer–Tintable LensGuard 509 ------ Eyewear Hardcoat - Mid Bayer–Tintable LensGuard 510 ------ Optimum Eyewear Hardcoat–Tintable All Coatings