Auto Darkening Filter Compatible with Brand Optrel Compatible with Manufacturer Model Number K6500 K6501 Compatible with Series e650 Helmet Sphere Series Features Fadetronic Gring Mode Opening Delay Function Replacement Auto Darkening Lens for e650 Helmet Sensitivity Control Shadetronic For Use With 1006.3 Lens Color Green Magnification No Plate Length 4 1/4 in Plate Thickness 0.25 in Plate Width 2 in Standards CE ANSI EAC AS/NZS complies withCSA Z94.3