Baader Planetarium
Baader UFC 31 mm AUX-Filter-HolderAccepts unmounted, round 31 mm filtersRequires 1x UFC-RD50 Slider (2459113)Mounts into the UFC D50 slider, which slides into the UFC filter base and allows fast exchange between filters while still holding every filter...
BAA-UFC-RD31 (Baader #2459151)