This is a 5mm to 8mm Aluminum coupler. A common application for this coupler is to connect a stepper motor with a 5mm axis to a larger 8mm rod. In 3D printers it is commonly used to opperate a threaded rod.
This coupler is cut like a spring, giving it a flexible and spring property.
- outer diameter: 20mm
- Lenght: 25mm
- Fastening screws: 2 (1 for each side)
- Material: Aluminum