7pcs 49 52 55 58 62 67 72 77 mm Step Up Filter Ring Stepping Adapter Set DC38 Product Description : Special aviation aluminum alloy, high strength, impact resistance, twist and pressure Machining process Surface treatment: high-mesh sand blasting machine and color quality pure matte black or silver Ultra-low chemical residues, attached to a solid! Font Handling: Font clear mission, silk screening of non-mimeo, attached to a solid!Package Included: 49mm-52mm Step-up ring x 1 52mm-55mm Step-up ring x 1 55mm-58mm Step-up ring x 1 58MM-62mm Step-up ring x 1 62mm-67mm Step-up ring x 1 67mm-72mm Step-up ring x 1 72mm-77mm Step-up ring x 1 impact resistance