Wide-angle eyepiece for older (pre-Geoma) Vixen spotting scopes i. Specifications: magnification, 18X with 50mm Vixen scope, 22X with 60mm Vixen scope; good eye relief (13mm). Also fits many older Vixen-made Bushnell Spacemaster scopes, as well as older Kowa scopes (eg, TS-1, TS-2, maybe others) with same M28 x 0.75 thread (please research to confirm compatibility before purchasing). Original front and rear caps.