Lindsey Optics - Brilliant² Rota-Pol Circular Polarizer 6.6x6.6" / 161mm
Fits in most 6.6" x 6.6" Professional Cine Matte Boxes Allows simple and easy rotation of the included 161mm Brilliant-Pol Circular Polarizer Broadband Multi-Layer Oil and Water Resistant Anti-Reflection coating (MC Coating)