Omax 49-52mm Step-up Adapter Ring for DSLR Cameras (Made of Plastic)Product Description : 52mm threads to the 49mm filter size of your lens product This ring is made of plastic Package Include : 49 52mm ring Omax Omax step up adaptor ring 49 52mm easily screws onto the front of any 49mm lens, and allows you to convert it to the 52mm threads of accessory items (such as filters, hoods, flashes and lens converters).