2 x Step Up Adapter Ring: 1*a + 1*b
Product Name : Step Down Adapter Ring;Lens Side : 55mm/ 2.2 inch/52mm/ 2 inch
Filter Side : 52mm/ 2 inch 49mm/ 1.9 inch
Total Size : 57 x 6mm/ 2.3 inch x 0.24 inch (D*T)/55 x 6.5mm/ 2.2 inch x 0.26 inch (D*T)
Material : Metal;Color : Black
Weight : 13g
The 55mm-52mm ring adapter easily screws onto the front of any 55mm lens, and converts the thread size of your lens to the thread size of any other 52mm accessory (such as filters, hoods, flashes and lens converters).
The 52mm-49mm ring adapter easily screws onto the front of any 52mm lens, and converts the thread size of your lens to the thread size of any other 49mm accessory (such as filters, hoods, flashes and lens converters)
Package Content : 2 x Step Up Adapter Ring