S Wolf 8 PCS Meatl 82 77 72 67 62 58 55 52 49mm Step Down Rings Lens Adapter Filter Set for Digital SLR Camera his step down adapter ring set allows a filter/attachment with larger thread size to be used with a lens with smaller thread size.Made of metal (not plastic)Color : blackPackage Included: 52mm-49mm Step-down ring x 1 55mm-52mm Step-down ring x 1 58mm-55mm Step-down ring x 1 62mm-58mm Step-down ring x 1 67mm-62mm Step-down ring x 1 72mm-67mm Step-down ring x 1 77mm-72mm Step-down ring x 1 82mm Step-down ring x 1 This step down adapter ring set allows a filter/attachment with larger thread size to be used with a lens with smaller thread size