This is a quality Orion eyepiece. The optics are four element fully-coated in a precision pollished anodized aluminum barrel. Threaded to accept 1.25" filters. 50 degree apparent field of view. Great condition, has seen very light use. Complete with end caps in the original box. Sells new for $28 + shipping. Asking $18.00 delivered in the continental USA. Photo available on request. Thanks!