Specification Brand : FREEWELL BulletPoint1 : Adapts to the 67mm main adapter ring on the NiSi M75 System BulletPoint2 : For lenses with 40.5mm standard filter threads BulletPoint3 : Aluminum-Alloy Construction BulletPoint4 : 40.5mm-67mm Step-up ring BulletPoint5 : What's In The Box: Plastic Case, Limited Lifetime Warranty ExternallyAssignedProductIdentifier : 6971634242057 ExternallyAssignedProductIdentifier1 : 785698954094 ExternallyAssignedProductIdentifier2 : 0785698954094 ItemName : Freewell Step Up Ring 72mm compatible with K2 Series ItemPackageDimensions_Height : 11.9 centimeters ItemPackageDimensions_Length : 2.5 centimeters ItemPackageDimensions_Width : 11.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-filter-step-up-rings Language : english Manufacturer : FREEWELL ModelNumber : FW-K2-SU72 NumberOfBoxes : 1 PackageLevel : unit PartNumber : FW-K2-SU72 PhotoFilterThreadSize : 77 millimeters ProductDescription : Freewell Step Up Ring 72mm compatible with K2 Series ProductSiteLaunchDate : 2023-02-28T06:25:13.203Z Size : 72MM SupplierDeclaredDgHzRegulation : unknown WarrantyDescription : NO WaterResistanceLevel : not_water_resistant