Thomas and Betts makes this 54775 compression C-Taps for permanent pig tailing, two-way splicing or tapping to an unbroken continuous main. Die color-coded YELLOW, use this C-Tap on 250 kcmil - 500 kcmil main wire, and #6 AWG - 350 MCM branch wire. Use with T&B lugs assures high conductivity, low resistance and high pullout values. Use the 272X212 YELLOW 115H coded die with the 272X100 Insulated head manual hydraulic crimper to properly install this C-Tap.