Danubia K17 Kellner 17mm 1.25" Astro Telescope Eyepiece Table Top Tripod or eye of the subject

or eye of the subject

which the binoculars slip into so they don't move around inside the case and top flap has an internal mesh pocket for any small accessories like a lenspen or cloth

All I series lenses have an all-metal construction

simply twist them when wearing glasses

Danubia K17 Kellner 17mm 1.25" Astro Telescope Eyepiece Table Top Tripod or eye of the subjectDanubia 1. 25" K17 Kellner is a 17mm eyepiece for Astro Telescopes which is fully coated and offers a wide angle field of view, so is really useful for locating smaller objects in the night sky. Easy to fit to a telescope with a 1. 25" diameter eyepiece aperture, the Kellner style of eyepiece, is an achromatic one and has a three lens design. It gives excellent eye relief and is a terrific aid to extended night time viewing.