In order to accommodate mirrorless cameras with small aperture lenses, we have expanded the lineup of step-up rings from previous models. The ring is required to install filters larger than the lens filter diameter. Knurling (non-slip) processing makes it easy to turn and operate. Made in Japan Adapter for attaching large sized filters to small diameter lenses Male (lens end): 46mm Female (filter end): 67mm Country of Origin: Japan Item Weight 0.8 ounces Manufacturer ケンコー(Kenko) Item model number 887462 Package Dimensions 3.58 x 3.5 x 0.63 inches