This 49mm silver FUJIFILM X100 Filter Adapter from PolarPro is a suitable replacement for the stock trim ring of your camera. It allows you to mount a PolarPro filter on you camera's lens, which is especially useful with the Everyday Filter by Shortstache. The filter is made from brass to minimize cross threading and the problems that can cause. The adapter is compatible with the FUJIFILM X100VI, X100V, X100, X100S, and X70 cameras, and it is designed to work with the stock lens cap.