A simple front cap for all lenses compatibable with the Rolleiflex SL66 and SL6000 camera family. That means any lens that has a Bay VII mount should fit this cap.

I printed the model with no problems on my Sovol SV06, but be aware that the tolerances are relativly thight and you might need to scale the model by 1 or 2% depending on the accuracy of your printer.