Rigid Replacement Eyecup for Mamiya RB67 Prism Finder - Black PETG, 1 Piece

A rigid black PETG replacement eyecup for a Mamiya RB67 prism finder with the matching rectangular eyepiece mounting pattern. WHAT'S INCLUDED One 3D-printed eyecup. Camera, prism finder, corrective lenses and other accessories are not included. SIZE AND COMPATIBILITY Approximate overall size: 57.0 x 57.0 x 17.0 mm. Mounting opening: approximately 24.66 x 30.48 mm, with a wider internal retaining groove. Compare the mounting shape and dimensions with your existing prism finder before purchase. Compatibility across all RB67 finder generations, PD metered finders and RZ67 finders has not been verified. Avoid forcing the part onto a mismatched frame. MATERIAL AND FINISH Rigid black PETG, with thinner mounting walls and rounded cup edges. This is a hard plastic eyecup rather than a rubber cushion. Layer lines and support-removal marks may be visible, especially on the rear surface. The design has been checked using digital geometry comparisons and simulated printing. Physical installation force, retention and repeated-use durability of this PETG version have not been independently verified. Aftermarket part, not made by or affiliated with Mamiya. Images labelled CG are computer renderings, not product photographs.