Specification Brand : BORDSTRACT BulletPoint1 : Versatile Connection Functionality - This set of motor copper shaft coupler sleeves facilitates connections between motors and shafts, offering adaptable applications for model cars, ships, robots, and other projects requiring precise linkage and dependable transmission. BulletPoint2 : Sturdy and Durable Build - Fashioned from premium metal material, these coupler connectors offer durability and an extended service life, making them well-suited for various applications requiring dependable motion transmission connections. BulletPoint3 : Precise and Reliable Connectivity - Meticulously crafted to seamlessly join rigid rods, these coupler sleeves guarantee a dependable and secure connection, ensuring accuracy in motion transmission across various tasks and applications. BulletPoint4 : Wide Range of Applications - Ideal for screw rods and serving as a transmission between power slurry shafts and motors in model remote control ships, these connectors offer adaptability and functionality across a spectrum of projects. BulletPoint5 : Multiple Diameter Options - Offering three types with diverse diameter combinations ( 2.3-2.3mm, 2.3-3.0mm, 2.3-4.0mm ), this package provides flexibility and adaptability for various connection requirements in your projects, allowing you to select the optimal size for your needs. Color : 2.3mm to 4mm ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 9463743161574 FinishType : Polished ItemName : BORDSTRACT Motor Shaft Coupling Connector, Copper Transfer Joint Adapter Set for Transmitting Motion in Model Cars Ships Robotics(2.3mm to 4mm) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : BORDSTRACT Material1 : Stainless Steel Material2 : Steel MetalType1 : Stainless Steel MetalType2 : Alloy Steel ModelNumber : SSIMOO NumberOfItems : 1 NumberOfPieces : 1 PartNumber : BORDSTRACTug17v5hs0x-03 ProductDescription : Specifications: Material: Nickle plated iron Type: 2.3-2.3mm/2.3-3.0mm/2.3-4.0mm (optional) Weight: 40g/1.4oz, 34g/1.2oz, 31g/1.1oz (approx.)