Techspan® Mechanical Connector, 1-Barrel, Stranded/Copper/Aluminum Conductor, 4 AWG to 500 kcmil Conductor, 3/8 in Stud, 1 Bolt Holes, 600 V AC, 90 deg C, 6061-T6 Aluminum, Electro-Tin Plated, 2.81 in W x 1.5 in D FEATURES Electro-TiN plated for low contact resistance and protection against corrosion East installation, no tools required Connectors are reusable SPECIFICATIONS Conductor Size : 4 AWG to 500 kcmil Conductor Type : Stranded/Copper/Aluminum Dimensions : 2.81 in W x 1.5 in D Finish : Electro-Tin Plated Material : 6061-T6 Aluminum Number of Bolt Holes : 1 Stud Size : 3/8 in Temperature Rating : 90 deg C Type : 1-Barrel Voltage Rating : 600 V AC