Specification Brand : 3M BulletPoint : 3M(TM) Retaining Ring 30646, 7/16 in Diameter [You are purchasing the Min order quantity which is 1 Bag] ExternallyAssignedProductIdentifier1 : 0051141288161 ExternallyAssignedProductIdentifier2 : 051141288161 ItemName : 3M output spindle 28816; 5/8-11 x 15/16 [PRICE is per EACH] ItemPackageQuantity : 1 ItemTypeKeyword : abrasive-dressing-tools Manufacturer : 3M NumberOfItems : 1 NumberOfPieces : 1 PartNumber : 00051141288161 ProductDescription : Replacement parts for 3M(TM) 1 HP Right Angle Disc Sanders PN 28408 and PN 28622. See Owners Manual for Parts List and tool schematic. ProductSiteLaunchDate : 2015-04-29T23:01:41.071Z SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 WasherType : Wave Spring