Specification: pcs screws designThread Size:Color: Material: Total Length: Outside Diameter : Through Angle: Package List: Pcs x Rigid Shaft Coupler Pcs x M4 Screws Description:Made from Steel material to reduce inertiaRigid coupling,high torque with rigidity,low inertia and excellent sensitivityNo rotation gap, elastic action can make up for symmetrical angular misalignmentMaintenance-free, oil proof and corrosion resistanceSuitable for model car, model boat, hardware, , mechanical drive situations etc Note:Please allow 1-3mm differs due to manual measurementDue to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding
