This Arri MB-20 Adapter Ring R2-R3 is used between the background bellows adapter and any filter rings you may have.
The Adapter ring allows the user to step down to a R3 filter ring by reducing the R2 138mm diameter of the bellows adapter to a 114mm diameter.
CAT 338668 K2.47115.0
Prop65 WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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