4 Pcs 3mm To 3mm Universal Joint Shaft Couplings With Screws For Motor, 45 Steel, Electroplated And Wear Resistant, International Flange Standard, Easy Shaft Connection For DIY Robotics And Machinery

3mm-3mm Universal Joint Shaft Couplings, 4-Pack
✔️ 4 pcs 3mm-3mm joints with screws, 45# steel, electroplated, M3

These compact joints are built from 45# steel and electroplated for wear resistance, designed to connect 3mm shafts in DIY robotics, hobby CNC, and small machinery.

✅ Inner diameter: 3mm to 3mm
✅ Outer diameter: 9mm
✅ Length: 23mm
✅ Material: 45# steel with electroplated finish
✅ Package includes: 4 couplers, 1 M3 hex wrench, 8 screws

💡 What is a 3mm-3mm universal joint shaft coupling used for in DIY robotics?

This handy connector lets you link two 3mm shafts in tight setups. - Handy for connecting motors to driven parts in compact machines - Helps absorb minor misalignment and reduces shaft stress - Made from 45# steel with electroplated finish for wear resistance - Includes screws and M3 hex wrench for quick setup