NiSi 46 49mm Adapter Ring for Swift System

Special filter adapter ring for use with NiSi Swift system filters Durable and lightweight aluminum construction for easy handling and lasting use For lenses with a filter thread of 46 mm for use with NiSi 49 mm Swift system filters The 49 mm Swift system filters can be easily attached to the adapter ring by pressing on the front of the adapter To determine your lens thread size, pay attention to the symbol "⌀", e.g. 46 mm