GSO 15mm Super View eyepiece. Standard 1.25" eyepiece with chrome insert tube and safety groove. 68 degree field of view. Eye relief about 1/2". Eyepiece come with rubber eye cup that can be rolled down. Eyepiece is threaded for standard 1.25" eyepiece filters. Under 4 ounces. Dust caps included. Used as a demo but in excellent condition.