This 67mm Threaded Filter Adapter for iPhone 18 Pro from SmallRig is an ecosystem accessory designed for SmallRig video cages for the iPhone 18 Pro. It supports 67mm threaded filters and is suitable for professional mobile video recording, live streaming, and short film production. It can be used to add a variable ND filter, a circular polarizer, diffusion filters, or any other type of filter required to help you achieve your individual creative vision.