Thomas & Betts Sta-Kon ; Model RC Crimp-on wire joint in white color accommodates copper conductors of size four 18 - two 12 AWG. One-piece wire joint features self-insulated nylon insulation for additional protection. It measures 0.950 Inch x 0.430 Inch. Tool applied wire joint has voltage rating of 600 Volts and withstands temperature rating of 105 deg C. Wire joint is UL listed, CSA certified and RoHs compliant. Also known as -Thomas & Betts RC6 Sta-Kon Nylon Insulated Wire Joint 4 18 - 2 12 AWG Copper