Midwest Optical LP815-52

Midwest Optical SU46-52, Step-Up Ring, from M46 x 0.75 To M52 x 0.75, 55 mm Outer Diameter, 43.5 mm Clear Aperture

Midwest Optical SU49-52, Step-Up Ring, from M49 x 0.75 To M52 x 0.75, 54 mm Outer Diameter, 46 mm Clear Aperture

Midwest Optical SD55-52, Step-Down Ring, from M55 x 0.75 To M52 x 0.75, 56.8 mm Outer Diameter, 51.2 mm Clear Aperture

Midwest Optical SD58-52, Step-Down Ring, from M58 x 0.75 To M52 x 0.75, 60 mm Outer Diameter, 51.2 mm Clear Aperture

Midwest Optical SD62-52, Step-Down Ring, from M62 x 0.75 To M52 x 0.75, 64 mm Outer Diameter, 51.2 mm Clear Aperture