The flexibility of the coupling shaft removes stress between the motor and driving components.
It can play a role in the unexpected.
Great helper for your productivity.

Specifications:
Material: Steel
Colour: Black
Match Saw Blade Inner Hole: 6mm (M6)
Match The Motor Shaft Diameter: 3.17mm, 4mm, 5mm, 6mm, 8mm. (choose one type)
Quantity: 1 Set

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

Package Contents: 1 x Set of Motor Shaft Coupling