KO America's heat sink for VFS-1 based esc is a copper based heat sink. The copper allows for better heat transfer for the FET's to the heat sink and it is nickel plated. The pin fin design allows for more surface to air heat dissipation of the heat sink and helps to keep the FET's more efficient. Test have shown up to a 17% reduction in thermal temperature. Aluminum based heat sinks can only provide a thermal reduction of up to 12%, thus make a copper based heat sink is far more superior. Thermal heat transfer tape and instructions are also included.