Specification Brand : Carr Lane Manufacturing BulletPoint1 : ID: 20mm BulletPoint2 : A Diameter Bushing: 1.6873/1.6869 BulletPoint3 : B Bushing: .623 BulletPoint4 : B Hole: .637/.639 BulletPoint5 : C: .812 ExternallyAssignedProductIdentifier : 7735267603277 IncludedComponents : Unit^Instruction Guide ItemName : CL-20-CLFR Carr Lane Manufacturing Carr Lock Face Mount Receiver Bushing: ID 20mm ItemPackageDimensions_Height : 0.8 inches ItemPackageDimensions_Length : 1 inches ItemPackageDimensions_Width : 0.8 inches ItemPackageQuantity : 1 ItemTypeKeyword : quick-disconnect-bushings Manufacturer : Carr Lane Manufacturing ModelNumber : E278 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : CL-20-CLFR ProductDescription : The Carr Lock System requires that each Carr Lock Clamp be used together with either a Face-Mount or Back-Mount Receiver Bushing. The clamp's locking balls engage the angled ID section of the Receiver Bushing, pulling the clamp firmly downward. Made in USA. ProductSiteLaunchDate : 2013-11-05T01:46:33.101Z SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 39120000