SWA 1.25inch 15mm Super Wide Angle 70 Degree Eyepieces for Astronomical Telescope - Five Elements Fully-coated High-index Glass Super wide angle 70 degree apparent field of view---for that immersed in space feeling and available in 1.25" 15mm formats to cover a wide range of magnifications and true fields of view. Super sharp --with five elements fully-coated high-index glass, to give you excellent aberration correction and extremely high resolution rivaling higher-priced eyepieces. Blackened lens edges, anti-reflection threads for maximum contrast Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal Fold-down rubber eyecups, rubber grip rings for comfort and safety. Light in weight for their size, making for easier scope balancing. 30 days money back warranty. 5 years limited warranty.