Brass Joint 3-3mm Micro Copper Cardan Universal Joint Shaft Couplings (1 PC)

Specifications

• Outer diameter: 7 mm
• Length: 12.8mm
• Aperture: 3mm-3mm, both ends of the hole are 3mm, can be connected to the diameter of the shaft 3mm
• Material: pure copper
• Side hole is M2 screws