Rolleiflex SL66 Adapter for the Rollei Filterholder MK2

Made me an adapter to the Rollei Filterholder Mk2 for my SL66, so I can use the 100mm Filters I own.
Maybe you have to file down tiny bits of the lens connector to make it fit smoothly into the lens.
Maybe I'll do a rework to adapt the inner ring of the Filterholder, so I can use the Polarizer, too.

Update: I added a holder with 100mm diameter and 0.5mm thickness for bigger filter holders upon request.