MECCANIXITY 4mm Flange Coupling Connectors - 4 Pack With Screws For RC Model Motors & DIY Projects

RC enthusiasts and DIY builders, these flange coupling connectors are super handy for all kinds of motor and shaft projects! This 4-pack comes with everything you need - the couplings themselves, plus 8 M3 fastening screws and 2 M1.5 hex wrenches to get the job done. The couplings have a 4mm inner diameter (about 0.16 inches) which is perfect for connecting motors to shafts in many RC models and small machinery projects. They measure 12mm total height (0.47 inches) with a cylinder outer diameter of 10mm (0.39 inches) and base plate diameter of 22mm (0.86 inches). The diagonal screw hole distance is 16mm (0.62 inches) with base plate holes of 3mm (0.11 inches). They're made from iron with electroplating finish, and they've been heat-treated for extra durability and stability. What's really great about these is how they help stabilize your shafts and prevent wobbling or misalignment in your projects. The installation is straightforward - just align your shafts, tighten the screws with the included hex wrenches, and you're good to go. They're perfect for connecting motors in RC cars, drones, robots, or any DIY project where you need to join rotating shafts securely. The silver tone looks professional and the build quality is solid. Whether you're building from scratch or repairing existing equipment, having a few of these couplings on hand can save you a lot of frustration. They help ensure your motors and shafts work together smoothly without vibration or slipping. For anyone into model building, robotics, or mechanical DIY projects, these are one of those simple but essential components that make everything work better and more reliably. The package has everything you need to get started, which is always convenient!