Check the listing for details. BLACKBURN 10H Split-Bolt Conn,Plain,Bronze,Hex Head 3LJ68. Condition: New. Listed at 22.85 USD. Split-Bolt Connector, Body Finish Plain, Body Material Bronze, For Conductor Material Copper, For Minimum Equal Wire Size 4 AWG, For Maximum Equal Wire Size 1/0 AWG, For Minimum Run Wire Size (2) 4 AWG, For Maximum Run Wire Size (2) 1/0 AWG, For Minimum Tap Wire Size 4 AWG, For Maximum Tap Wire Size 1/0 AWG, Head Style Hex Head, Head Width 0.75 in, Hex Nut Size 0.938 in, Maximum Voltage 600 V, Torque 65 in-lb, Compatible Manufacturer Model Number 10H, Overall Length 1.59 in Split-bolt connector is for copper to copper connections. Bolt and nut are made of high strength corrosion-resistant bronze alloy.