The Baader Classic Plossl 32mm, 1 ¼ (HT-Multicoated) - w.aux spacer tube and winged rubber eyeguard lens assembly consists of a triplet of multi coated of element and eye piece of eye lens, so there surfaces. The interior has been blackened for a very good suppression of stray light of course, the hard anodized barrel has got a filter thread.
Looking into the eyepieces, you\'ll see the effect of the antirelex coating and the blackened lens edges. The coating is so good that it seems like there are no lenses at all disadvantages compared to so called planetary eyepieces which cost five times more.