YAM 1.25 Inch 66 Degree Wide Angle Eyepiece With this eyepieces , you will get a super wide field of view and superior optical performance and aluminum barrel is internally blackened to eliminate internal light scattering.Also 66 Degree apparent field of view will give a ideal experiences in deep-sky observing! This eyepiece also have bthis eyepieces , you will get a super wide field of view and superior optical performance and aluminum barrel is internally blackened to eliminate internal light scattering.Also 66 Degree apparent field of view will give a ideal experiences in deep-sky observing! ig eye lenses and great eye relief ( 13mm to 17mm) . Eyeglass wearers can view the entire field without removing their glasses. All eyepiece elements are fully coated, with the outer lens multi-coated for additional light transmission. The 1.25" aluminum barrel is threaded for filters and internally blackened to eliminate internal scattering. And its fold-down rubber eyeguard enhances contrast by blocking stray light. Specification: Model: WAE Material: Fully Aluminum Color: Anodized Black filed of view: 58degree Focal Length: 6mm, 9mm, 15mm, 20mm size: 1.25inch lens: FMC Packing: packing weight: 0.131 kg ( including the packing box and the dust cases) packing: white papar cartoon dimension: 83* 42* 42MM Also we have many models of the telescope accessory, such as telescope adater, adaters, eyepieces, focusers, diagonals and collimator eyepieces. welcome every to inquiry.