Panduit PV18-56R-CY Ring Terminal, Vinyl Insulated, 22 - 18 AWG, 5/16-Inch Stud Size, Funnel Entry, Red (100-Pack) Funnel entry ring terminal with insulated barrel for use with solid or stranded copper wire from #22 to #18 AWG (0.5 to 1.5 sq. mm) and 5/16" (M8) studs Ring tongue design assures a secure connection in high vibration 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 221F (105C)