83.5mm clamp to M77x0.75 female thread adapter for Leica-R 15mm lens

• Front side - M77x0.75 female thread
• Rear side - 83.5mm inner diameter

This adapter allows using M77x0.75 filters and accessories on Leica-R 15mm lens.

Front outer diameter is 95mm to allow coupling with corresponfing matte box.

Will fit other lenses with 83.5mm (or bit less) front diameter. Depth is 33mm.

It is secured with three set screws.

Made of anodized aluminium. Weight is 170g