Robust aluminium alloy material, surface oxidation treatment, more durable.
Easy and quick installation and widely used, fit for 6mm shaft motor
Outer Diameter: 25mm 0.98inch
Inner Diameter: 6.8mm 0.27inch
With 6 mounting holes for M3 screws, letting you mount custom wheels or mechanisms to your motors
A special coupler, which can fix one shaft to a plane and install other parts on the shaft easily
Suitable for model shaft connection, perfect accessories for Model motor, etc

Specifications:
Material: Aluminum Alloy, Surface oxidation treatment
Fit for: 6mm Shaft Motor
Outer Diameter: 25mm 0.98inch
Inner Diameter: 6.8mm 0.27inch

Package Includes:
2PCS x Aluminum Alloy Coupling
1PC x Wrench
4PCS x Screws

Note:
1. Transition: 1cm=10mm=0.39inch
2. Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid.
3. Due to the difference between different monitors, the picture may not reflect the actual colour of the item. Thank you!