Product Name: Step Up Adapter Ring;Material: Metal Male Thread: 46mm/1.8inch ;Female Thread: 52mm/2inch Size(Approx): 54 x 6mm/2.12inch x 0.24inch (Max.D*H); Weight: 5g Color: Black Adapter ring is suitable for filters, close-up lenses and other attachments to lenses with different filter thread sizes. The Bower 46-52mm step-up adapter ring attaches easily to the front of any 46mm lens and allows conversion to 52mm threads of accessories (such as filters, hoods, flashes and lens converters). Package Contents: 1 x Step Up Adapter Ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.