B-Stock items are gently used and may show various signs of use, such as dents or scratches that do not affect product function. All B-Stock items have been quality tested and come with the standard Wooden Camera warranty.

UMB-1 Mattebox Clamp On Ring (143-134mm) is a clamp on reduction ring for converting the Base or Swing Away version of the Universal Mattebox into a Clamp On version.

Specifications:
Weight: 90.7 g (0.2 lbs)
Dimensions: 152.4 x 127 x 152.4 mm (6 x 5 x 6 in