The Cokin XL-Series (X Series) Adapter ring attaches to the lens and adapts it to fit the XL-Series Filter Holders. Available in 62mm through 112mm sizes. Once the adapter and holder are attached, the Cokin filters can be slid into the holder and you are ready to begin shooting. The adapter ring is made of black anodized aluminum for anti-reflection and durability. For use with the following holders: BXE01 - EVO XL (X) Series EVO Holder BX100A - Standard XL (X) Series Holder