BMPCC 4K / 6K IR Cut Filter (35.5mm, Round, DIY) [Product Contents] Round, approximately 35.5mm diameter / 1.5mm thick Double-sided coating [Details] Replacement IR filter for Blackmagic cameras with mold, stains, or discoloration. Recommended for those who want to DIY replace the IR cut glass in front of the BMPCC 4K / 6K sensor. I purchased this for a camera I planned to bid on, but I lost the auction, so I'm selling it. The product itself is brand new and unused, having arrived just a few weeks ago. [Supplement] Parts for experienced DIYers. There are many instructional videos on YouTube and other platforms on how to replace it. Special tools may be required, so it is recommended for those who can perform the replacement work themselves. [Please Note] Camera body and other accessories are not included. This is a non-returnable part, so please purchase with your understanding. Instant purchase OK. Feel free to ask if you have any questions!