GEM-COAIR Genus Elite Clamp on Interface ring to GAR lens adapter ring

Slotting snugly into the back clamp ring of a matte box, the Genus donut adaptor ring (GARD) is a step-down ring that bridges the space between the lens adaptor ring and the matte box. Made from high grade Delrin, the Genus donut adaptor ring features an angled inner lip that fits all lens adaptor rings from 52mm to 86mm

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