This component is an LED lens thats used in current production of LED lighting. Manufactured by Ledil of Finland, model FX10855-RES-W. Nominally 22 mm square and 9 mm thick with 1 diverging cone, the design yields a beam characterized as a 17 degree cone at FWHM (Full Width at Half Maximum). Includes lens and holder components. Molded in PMMA [poly(methyl methacrylate)] resin. Sold in packages consisting of a lens and a holder for mounting. Unused.