This is a high quality; fully multi-coated; 5-element eyepiece; featuring a modern optical design.
It offers extremely well corrected 67 degree wide-field vistas; with pin-point sharp stars right across the field and excellent eye-relief. They can be used on "fast" telescopes - telescopes with a short focal ratio - while still retaining respectable field sharpness.
They come complete with fold-down rubber eye-shield. 1.25"/31.7mm fitting.