Specification Brand : TTZEZE BulletPoint1 : Hight Quality Material - This coupling connector is made of fine plating steel, heat and electroplated process make it sturdiness, striking shaft more stable and easy for installment and replacement. BulletPoint2 : Wide Applications - This flange coupler is produced based on international flange standard, widely used in model shaft connection, perfect accessories for RC model motor. BulletPoint3 : Function - A special coupler, which can fix one shaft to a plane and install other parts on the shaft easily. BulletPoint4 : Standard Specification - Package includes 5 pcs rigid flange shaft, coming with mounting screws and wrench. Inner diameter: 8mm. Cylinder outer diameter: 16mm. Cylinder height: 10mm. Base diameter: 32mm. Base height: 2mm. Screws: M4. BulletPoint5 : NOTE: Please choose the right size according to your needs. Color : 8mm(5/16") ConnectorType : Ring DriveSystem : External Hex ExteriorFinish : Silver ExternallyAssignedProductIdentifier1 : 712662854258 ExternallyAssignedProductIdentifier2 : 0712662854258 ExternallyAssignedProductIdentifier3 : 00044861050835 FinishType : Brass GpsrSafetyAttestation : 1 ItemDisplayWeight : 0.14 kilograms ItemName : 5 Pack Flange Coupling Connector, TTZEZE Rigid Guide Steel Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors,High Hardness Coupling Connector with Set Screws and Wrench 8mm(5/16") ItemPackageDimensions_Height : 8.7884 centimeters ItemPackageDimensions_Length : 2.4892 centimeters ItemPackageDimensions_Width : 6.4008 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : TTZEZE Material : steel Material1 : Aluminum Material2 : Copper MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Alloy Steel MetalType1 : Aluminum MetalType2 : Copper ModelNumber : Brass Sleeve Coupling NumberOfItems : 1 PartNumber : 00634SI ProductDescription : 5 Pack Silver Flange Coupling Connector, Rigid Guide Steel Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors, High Hardness Coupling Connector with Set Screws and Wrench. ProductSiteLaunchDate : 2021-09-23T08:00:15.599Z Size : 32mm/1-1/4inch Style : Brass SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31161700