The coil heater part number is CL068-020A, or it is similar to 81-99-175-056. The coil heater inner diameter is 0.6875 (11/16)", and the coil heater length is 2.000". The electric coil heater leads are 36" long with stainless steel overbraid. The electric heating coil also comes with a ground wire. The coil heater is made for 240 volts and 175 watts. This Viper coil heater has a .13" by .13" square cross section. CL1 through CL5 Lead Orientations - Click here to see the type CL1 lead orientation that this coil heater has.