The Weldmark by Lenco LC-10 Cable Connector Set brings advanced design to welder cable functionality and connectivity. Insulated and made from brass and special heat/cold resistant cover material. Designed for use with welding cable, it has a cable size capacity of 4-1/0, and a max rating of 250 amps. Connector color is black. Set includes both male and female connectors. Made in the United States. Prop65 Warning: This product may contain materials known to cause cancer or reproductive harm.