Gosky 1.25inch Plossl Telescope Eyepiece - 4-Element Plossl Design - Threaded for Standard 1.25inch Astronomy Filters (40mm) 1.25 inch 40mm low power plossl eyepiece, gives the widest viewing field along with extra sharpness and long eye relief 4-element plossl design, has a approx 52 degree AFOV. The high quality optical lens minimizes internal reflection and maximizes contrast. The blackened eyepiece barrel also prevents reflection. Standand 1.25inch size, fits all stand telescope brands. Threaded for 1.25inch astronomical filters. *Comes with sturdy plastic and rubber cap-proect the eyepiece from dust and moisture Soft rubber eye guard that's custom fitted with a bayonet mount and brings convenience to glasses wearers. 1 year limited warranty.