Ring Terminal, Expanded Vinyl Insulation, 22 - 18 American Wire Gauge (AWG), 1/4 Inch Stud Size. Expanded wire entry designed to accommodate wire with a larger insulation thickness. Ring tongue design assures a secure connection in high vibration applications. Insulation support helps to prevent wire damage in bending applications. Brazed seam protects terminal barrel from splitting during the crimp process. Internal barrel serrations assure good wire contact and maximum tensile strength. UL Flammability UL 94V-0, maximum insulation temperature 221 degrees Fahrenheit (105 degrees Celsius). UL and CSA rated up 600 Volts per UL 486A/B. Standard Package.