1HIGH STRENGTH: Universal joint coupling connector is made of steel, which is strong, wear resistant, and the impact shaft is more stable. 2ARBITRARY BENDING ANGLE: RC universal joint coupler can be bent at any angle and can be used for various models of model cars and model boats. 3LARGE TRANSMISSION ANGLE: Universal joint shaft coupling is flexible, with large transmission angle, widely used for shaft connection, can be used for motor, etc. 4EASY TO INSTALL AND REPLACE: Universal joint shaft coupler is easy to install and replace by grub screw and wrench tool, directly replace the old or damaged parts. 5EXQUISITE WORKMANSHIP: 2 section universal joint coupler is exquisitely made and compact, providing you with a great using experience. Item Type: Universal Joint Shaft Coupling Material: Steel Color: Silver Length: Approx. 23mm/0.9in Diameter: Approx. 9mm/0.4in Connection Hole Aperture: Approx. 3mm/0.1in Application: RC Model Cars, Model Boats, Etc. 5 x UniversalJointShaftCoupling 1 x Wrench 10 x Grub Screw