These are high quality South American production Meade Series 4000 plossls. Various focal lengths available. Higher quality than the current chinese production. All complete with bolt case. Nice and clean.
The world standard in telescope oculars, Meade eyepieces yield the widest possible fields of view, consistent with pinpoint edge-of-field sharpness and long eye relief—and yet with extremely low astigmatism, spherical aberration, and off-axis color.