Specification Brand : K&F Concept BulletPoint1 : 【Aluminium Alloy ing】This step-up ring is made of aluminium alloy not easy to be deformed, and can maintain its performance for a long time, smoothly install and durable. BulletPoint2 : 【Step Up Ring】This step up ring adapter easily screws onto the front of any lens with 37mm filter diameter, and converts the thread size of your Lens to the thread size of any other 40.5mm accessory. BulletPoint3 : The lens side: 37mm BulletPoint4 : The filter side: 40.5mm BulletPoint5 : 【Packaging Include】2* Brass adapter ring + 1*Microfiber cleaning cloth. Note: compatible with all 37mm camera lenses & 40.5mm filter, please reconfirm the lens size before ordering, it's always beside the "Ø" (diameter) symbol. BulletPoint6 : Lightweight Color : 46mm to 49mm ExternallyAssignedProductIdentifier : 8011513502006 ExternallyAssignedProductIdentifier1 : 0797439320938 ExternallyAssignedProductIdentifier2 : 797439320938 IncludedComponents : NO ItemName : K&F Concept 37-40.5mm(2 Pcs) Step-Up Ring Adapter, 37mm to 40.5mm Step Up Filter Ring for 37mm Lens Install 40.5mm ND CPL UV Lens Filter ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 11.1 centimeters ItemPackageDimensions_Width : 11.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-filter-step-up-rings Manufacturer : Shenzhen Zhuoer Photograph Material : aluminum ModelNumber : 13EU-KF05.329 NumberOfItems : 1 PartNumber : AU-KF05.329 PhotoFilterEffectType : Step Up Ring PhotoFilterThreadSize : 52 millimeters ProductDescription : 37mm to 40.5mm Step Up Filter Ring ProductSiteLaunchDate : 2024-05-08T01:10:36.994Z Size : 37-40.5mm SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 WarrantyDescription : 12 Month Warranty WaterResistanceLevel : not_water_resistant