Southwire #8 SOL/STR to #4 STR Copper Alloy Split Bolt Connector is designed for reliable splicing, tapping, and terminating conductors in grounding applications. This connector is rated for use with voltages up to 600 volts and can withstand temperatures as high as 90 degrees Celsius. Each order includes one Split Bolt, making it convenient to meet your electrical connection needs. For optimal performance, especially when connecting Aluminum to ACSR or Aluminum to Copper wires, it is to use an oxide-inhibitor compound to prevent corrosion and ensure a secure connection. Model Number: 65178940