SoldBreakthrough Photography X4 CPL 82MM Polarizer Threaded Filter

I purchased this new directly from the manufacturer for my Canon RF system. I sold the lens before I ever used the filter, so it is essentially new/open box condition. My loss is your gain. Save over the original retail of $159. These filters are some of the highest quality made. A true 1-Stop CPL.
From the manufacturer...

The X4 CPL is engineered to be the sharpest and most color neutral polarizer on the market. Featuring our internally developed CPL film, state-of-the-art coatings and a precision machined brass traction frame, the X4 delivers unparalleled performance and durability.