G26100 +° Small CD Lens

Small enclosed glass lens assembly mounted in a metal threaded holder. Overall size is about 0.469" dia. of threaded body with 0.55" dia. top. Larger top part is 0.16" thick. Overall length is 0.65" long. We were told it was made for CD player/writer. New with included lens cover. No other data or nut for threaded portion included.