Tilta MB-T03 4x4 Carbon Fiber Matte Box + Tiffen Pro mist 4x4 filter

The Tilta MB-T05 4x4 Lightweight Matte Box is an accessory for the Tilta DSLR rig. The matte box features a "swing away" design for quick lens changes, and is equipped with a fixed and a movable 4x4 filter stage with two filter trays, a top flag, and two side flags.

Tiffen 4 x 4" Black Pro-Mist Filter (not sure which one)