COLOR-KEYED® Compression lug for copper conductor. Made of high-conductivity wrought copper. Recommended for up to 15kV. Installed with standard TB 14 and 15-tons compression tools with special rounding dies, the compression forms the connector and conductor into a solid mass to provide an optimum electrical bond between connector and conductor. The rounding die-overlapped compressions provide a smooth round surface. This combined with the tapered barrel ends, addresses the control for potentially damaging electrical stresses of high voltages.