I am selling these filters because I mistakenly purchased the wrong filter diameter. They have only been opened for photography. Both the NISI ND-VARIO 1-5 stop and the Black Mist 1/4 filter are 72mm in size, making them ideal for video production. This is a set price. Please comment if you would like to purchase them separately. - Brand: NISI - Model: ND-VARIO 1-5 Stops - Size: 72mm - Model: Black Mist 1/4 - Size: 72mm Thank you for looking.