2 pcs Metal Filter Step Up Ring Adapter:1 pcs 40.5mm-52mm & 1 pcs 52mm-67mm Product Name : Step Up Adapter Ring; Color : Black Material : Metal Size(Approx) : 55 x 6mm/2.16 inch x 0.24inch(Max.D*H)& 69 x 6mm/2.7 inchx 0.24 inch(Max.D*H) Male Thread : 40.5mm/1.59 inch Female Thread : 52mm/2 inch / Male Thread :52mm/2 inch Female Thread : 67mm/2.6 inch Adapter ring is suitable for filters, close-up lenses and other attachments to lenses with different filter thread sizes. The Bower 40.5-52mm Step-Up Adapter Ring easily screws onto the front of any 40.5mm Lens, and allows you to convert to the 52mm threads of accessory items (such as filters, hoods, flashes and lens converters). Package Content : 2 x Step Up Adapter Ring Only the above package content, other products are not included. Note: Light shooting 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.