Tiffen Black-Pro-Mist 1/1.1/2.1/4.1/8 (PM) 4" x 4" This is the classic Black Pro-Mist filter used in movies and commercials. Please see the photos for the condition. The edge of the 1/2 filter is chipped, but it doesn't affect its use. We will ship with a tracking number within 24 hours of purchase. The size is 4" x 4" and the thickness is 4mm, which is a common cinema filter size. (4 inches per side = 101.6mm) Many matte boxes support both 4" x 5.65" and 4" x 4" filters (e.g., Smallrig, Bright Tangerine, Chrosziel). This is a set of four filters. We have set the price very low, so don't miss this opportunity! Thank you for your consideration. 2 minutes ago