Aluminum Flex Shaft Coupler - 5mm to 5mm for Stepper Motors

If you are building a 3D printer from scratch, you might this coupler. It is designed for 5 x 5 mm bore sizes. It is durable and easy to install.

FEATURES

• Bore: 5 * 5MM
  
• Outer diameter: 20MM
  
• Increased Load-carrying Capacity
  
• Length: 25MM