These are new, straight through, 7X50 finderscopes. They present an inverted image and have a crosshair eyepiece with rubber eyecup. Very easy to mount and use. The objective lens can be adjusted to attain infinity focus. The optics are Mgfl coated. The main tube is 2.17" in diameter (55 mm) and the finderscope is 9 7/8" long.