Specification Brand : BORDSTRACT BulletPoint1 : Premium Brass Material: The hex shaft coupling is made of premium brass, rust and corrosions resistant, wear resistant and durable. It can withstand high temperatures and pressures without deformation or damage BulletPoint2 : tools, easy to install and disassemble. These couplings come with additional set screws, saving you the trouble of drilling additional holes and making them more secure. The wrench is included for your convenience and safety BulletPoint3 : Stable Connection: These shaft couplers can be used for connecting motor shafts, hex wheel tires, DC motors, robots, etc. They can adjust the angle and position of the shafts, and transmit torques and motion smoothly and efficiently. They also reduce vibration and noise, making your shafts more stable and reliable BulletPoint4 : Precise Workmanship: With fine workmanship, the brass flexible coupler joints are durable, making your shafts more stable, practical replacement parts. They have no burrs or sharps corners that could cause scratches or injuries. They have precise size and not easy to loosen BulletPoint5 : Versatile Solution: These hex shaft couplings are a cost-effective and versatile solution for your shaft connection needs. They are simple, sturdy and durable, and can last for a long time with minimal maintenance. They are also easy to replace if needed. They are suitable for various applications, such as RC motor shaft, RC car tire shaft, etc DriveSystem : External Hex ExteriorFinish : Brass FinishType : Finish ItemName : BORDSTRACT 10 Pcs Hex Shaft Coupling, Brass 5mm Inner Diameter Brass Flexible Coupler Joint for RC Motor Car Tires Shaft ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : BORDSTRACT Material : Brass MetalType : Brass PartNumber : BORDSTRACT7qm96b5agi ProductDescription : Specification: