1Pair Thru Panel Battery Terminal Connectors 3/8 In Black Red 440A Positive Negative Junction Stud Post for Car Boat Item Type: Thru Panel Battery Terminal Connectors Material: Nickel plated copper Operating Voltage: DC 12V to 48V Rated Current: 440A Instantaneous Current: 550A Number: Pair (red positive + black negative) Cross Sectional Diameter of Terminal Post: 3/8 inch Terminal Post Length: 1 inch at both ends Diameter of Opening: Approx.32mm/ 1.3in Application: Nickel plated copper posts allow you to properly secure cables as large as 4/0AWG to your firewall with sufficient torque to pass current to the other side Fitment: For a wide range of applications from car audio to marine