These affordable Plossls are identical to those sold under well-known brand names for as much as double the price. They feature multi-coatings on all air-to-glass surfaces, high-quality anodized finish, blackened lens edges, and knurled rubber grips. Threaded for standard 1.25" filters. Apparent field of view is 52° on the 15mm ($24.95), 20mm ($24.95), and 32mm ($29.95) models and 43° on the 40mm ($29.95) model. Our inexpensive plossl eyepieces make it affordable to build a collection for your binoviewer or binocular telescope.