Features:

• Material: Made of pure brass, it is sturdy, reliable, and strictly functional.
• Function: A special coupler used for connecting the motor shaft and the hexagon wheel of the robot, cars, and other models
• Use: Suitable for model shaft connection, perfect accessories for RC Model motor, etc.
• Durability and insulation make your shaft more stable and easy to install and replace.

Specification:

• Hexagonal Side: 7mm
• Hex Height : 6mm
• Opposite Side: 12mm
• Cylinder Height: 12mm
• Cylinder Outer Diameter: 11.5mm
• Cylinder Inner Diameter: 7mm
• Fastening Screw Hole: M4