33 MM Dark Field / Oblique Microscope Filter Set

25mm Diameter Circular Oblique Illumination – COL - Microscope Filter Set

29 mm Dia Circular Oblique Illumination COL Microscope Set

33mm Dia. Microscope Darkfield and Oblique Illumination Set

31mm Diameter Circular Oblique Illumination – COL - Microscope Filter Set

45mm Diameter Microscope Darkfield and Oblique Illumination Set

32mm Microscope Set Darkfield Oblique Sp. Effects Compatible Zeiss, Lomo+EQ

33mm Microscope Darkfield Oblique and Special Effects Filters