Specification Brand : Socobeta BulletPoint1 : Made of premium iron material with electroplating, these couplers are sturdy and . BulletPoint2 : A flange coupler is a kinds of special coupler that can fix a shaft on a flat . BulletPoint3 : Electroplated iron, good resistance BulletPoint4 : The coupler allows to mount other accessories on the shaft easily. BulletPoint5 : This type of coupling is mostly used to couple electric motors. ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 9436192135878 ItemName : Electroplated Iron Motor Guide Shaft Coupler Motor Shaft Coupler Motor Coupling Connector Flange Coupler 2 Pack for Couple Electric Motors 12mm ID X 18mm OD ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : Socobeta Material : Iron MeasurementSystem : Metric MetalType : Iron ModelNumber : Socobetai0rzubfdvw NumberOfItems : 1 PartNumber : Socobetai0rzubfdvw ProductDescription : Specification: Features: Made of premium iron material with electroplating, these couplers are sturdy and . A flange coupler is a kinds of special coupler that can fix a shaft on a flat . Electroplated iron, good resistance The coupler allows to mount other accessories on the shaft easily. This type of coupling is mostly used to couple electric motors. Specification: Material: Electroplated iron Inner diameter: 12mm / 0.47in Outer diameter: 18mm / 0.71in 4 holes: 4mm / 0.16in Weight: 55g / 1.9oz (approx.) Package list: 2 * Couplers 1 * Wrench 4 * Screws