Check the listing for details. B + W Brass Stepdown Adapter Ring. Color: Black, Condition: New. Listed at 39.95 USD. Bring enhanced versatility to your photography setup with the B+W Brass Stepdown Adapter Ring. Expertly crafted from high-quality brass, this durable adapter ring allows you to seamlessly attach threaded filters to lenses with smaller thread sizes. Its robust construction ensures a secure fit, minimizing the risk of cross-threading and providing a reliable connection between your lens and filter. Ideal for photographers looking to expand their creative options, the B+W Brass Stepdown Adapter Ring is an essential tool for achieving the perfect shot with a variety of filter effects. Whether you're capturing landscapes, portraits, or macro photography, this adapter ring offers the flexibility needed to adapt to different shooting conditions and artistic visions.