Grade: Industrial. Insulation Material: Copper. Color: Purple. Number in Package: 10 pk. Wire Type: Insulated. Application: Maximum Voltage. UL Listed. Volts: 300 volts. Number of Poles: 3. 3 Ports allow conductors to remain separate, permitting the lug go: Provide lower resistance, therefore lower temp. Provide longer-term reliability. Secure, mechanical lug designed for aluminum to copper connections. Ports of connectors contain a layer of corrosion inhibitor that provides resistance from oxidation. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.