Description:

Type- 4mm Hex Brass Shaft Coupling, suitable for model shaft connection, perfect accessories for RC Model motor, etc.. Coupling Size- Hex Height : 6mm ; Opposite Side: 12mm ; Cylinder Height: 12mm ; Cylinder Outer Diameter: 11.5mm ; Cylinder Inner Diameter: 4mm ; Fastening Screw Hole: M4. Material:- Made of brass, sturdy, reliable and strictly functional. Durable and insulation, make your shaft more stable, easy to install and replace.. Function- A special coupler, used for connecting the motor shaft and the hexagon wheel of the robot and other models.. Package Content- 2pcs Hex Coupler, 4pcs M4 Screws, 1pcs 4mm Hex Wrench..