2 PCS Wire Coupler Terminal Butt Connector 4GA AWG Gauge Joiner Barrel Set Screw, 4GA AWG

1. Superior electrical contact
2. Premium Quality- Heat Tested
3. Resistant to corrosion
4. Brass Nickel Plated Finish Gives Ultimate Power Delivery
5. 4 Gauge Input / Output
6. 5/16 (about 8.2mm) Stud ring diameter
7. Oversized Set Screws Holds Wire Securely in Place
8. Perfect for Extending or Joining Cut Wires