Product Name : Step Up Adapter RingMaterial : MetalMale Thread : 40.5mm/1.59 inchFemale Thread : 43mm/1.69 inchSize(Approx) : 45 x 6mm/1.77 inchx 0.24 inch(Max.D*H)Color : BlackWeight : 5gAdapter ring is suitable for filters, close-up lenses and other attachments to lenses with different filter thread sizes. The 40.5-43mm Step-Up Adapter Ring easily screws onto the front of any 40.5mm Lens, and allows you to convert to the 43mm threads of accessory items (such as filters, hoods, flashes and lens converters).Package Content : 1 x Step Up Adapter RingNote: 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.