Combined with the 143-114mm Rubber Donut (B1250.1001), this adaptor ring reduces the rear opening to accommodate ENG lenses with a 85mm front diameter.

- Compatible With Our Industry Standard 143mm Rubber Donut With 114mm Metal Threaded Ring
- Provides Additional Light Pr otection
- Built From High Grade Delrin
- Dimensions (Mm) 129 X 10
- Weight 61 Grams