Ring Terminal, Large Wire, Non-Insulated, 4 American Wire Gauge (AWG), 5/16 Inch Stud Size. Designed for use with No. 8 - 2 AWG copper wire. Ring tongue design assures a secure connection in high vibration applications. Internal barrel serrations assure good wire contact and maximum tensile strength. Brazed seam protects terminal barrel from splitting during the crimp process. Barrel of terminal internally beveled to provide quick and easy wire insertion. Maximum recommended operating temperature 302 degrees Fahrenheit (150 degrees Celsius). UL and CSA rated up to 2000 Volts per UL 486A/B. Standard Package.