The Cool Lights CL-SCR1000 scrim set is 195mm (7 11/16") in diameter and will work with any fixture with an accessory holder in that size range including the Cool Lights 1000w tungsten fresnel, Cool Lights HMI 575w fresnel, Arri 1000w compact tungsten fresnel and compatibles, and the Arri 575w HMI fresnel and compatibles. The set includes a convenient nylon carrying pouch, full single and half single scrims (standard green color code) and full double and half double scrims (standard red color code). Scrim material is stainless steel and protection edge ring is anodized aluminum.