Specification Brand : BORDSTRACT BulletPoint1 : Sturdy and Durable Construction - Crafted from premium iron material with electroplating, these Iron Flange Couplers are built to last. Their robust construction ensures sturdiness and durability, making them an excellent choice for a wide range of applications. BulletPoint2 : Unique Flange Design - The distinctive flange design of these motor shaft couplers allows you to securely fix a shaft to a flat. This feature is particularly advantageous when you need to attach a shaft precisely to a specific location on your equipment. It ensures a secure and stable connection. BulletPoint3 : Effortless Shaft Mounting - These flange couplers simplify the process of mounting other accessories on the shaft. Whether you're engaged in a DIY project or need to couple electric motors, these couplers provide a reliable and straightforward solution. Achieve accuracy and ease in your applications. BulletPoint4 : Versatile Utility - These couplers exhibit versatility and can be applied in a broad spectrum of scenarios. They prove to be exceptionally useful for coupling electric motors in various settings, making them a valuable addition to your toolkit. From DIY enthusiasts to professionals, these couplers cater to diverse needs. BulletPoint5 : Precise Specifications - Each coupler is meticulously designed with an inner diameter of 5mm (0.24in), an outer diameter of 10mm (0.39in), and features 4 holes, each with a 3mm (0.12in) diameter. The package includes 2 couplers, a hex key for effortless installation, and 4 screws, ensuring you have all you need for a effortless setup. Color : One Color Department : Unisex Adult DriveSystem : External Hex ExteriorFinish : Aluminum ExternallyAssignedProductIdentifier : 9463741945886 FinishType : Finish ItemName : BORDSTRACT Flange Coupling, 2Pcs 5mm Inner Diameter Electroplated Iron Shaft Coupler with Set Screw Hex Key Connector for DIY RC Model 3D Printer ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : BORDSTRACT Material : Iron MetalType : Iron ModelName : Mrisata3c9bdotnim-11 ModelNumber : Mrisata3c9bdotnim-11 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : BORDSTRACTg1a23wo9eh ProductDescription : Features: brand new and high quality. Made of premium iron material with electroplating, these couplers are sturdy and durable. A flange coupler is a kinds of special coupler that can fix a shaft on a flat. The coupler allows to mount other accessories on the shaft easily. This type of coupling is mostly used to couple electric motors.