Feature: 1. Aluminum Alloy Material: Filter adapter ring is made of aviation grade aluminum alloy, CNC one piece moulding process, rust resistant and drop resistant, not easy to deform. 2. Anti Light Leakage: Filter lens adapter ring has precise size design to ensure a tight fit with the filter camera, no need to worry about light leakage. Ensuring a premium using experience. 3. Strong Compatibility: The adapter ring can be used to mount a 49mm filter on for Ricoh GR3 GR3X and for RX100 series camera lenses without affecting the filter's performance. 4. Stable Installation: This camera lens filter adapter ring is fixed with standard threads, easy to install and not easy to fall off, won't damage your lens, stable and reliable use. 5. Lightweight: The filter metal adapter ring is so lightweight that you can hardly feel its weight, and it doesn't add too much weight to the camera when it's mounted, convenient to use. Specification: Item Type: Filter Adapter Ring Material: Aluminum Alloy Compatible Cameras: For Ricoh GR3 GR3X GR2, for RX100 Thread: Approx. 42mm/1.6in Support Filter Size: Approx. 49mm/1.9in Filter Mounting: Thread Mount. Package List: 1 x Filter Adapter Ring