Premium Telephone Line Cord Heavy Duty Silver Satin 4 Conductor 25-ft by TeleDirect Heavy Duty and Premium Quality Cable Cord - UL Listed Manufactured With High Quality, 50 Micron Gold Connectors Flame Retardant PVC Jacket Certified and Tested Lead Free, Mercury Free, Cadmium Free, and PBB Free Will Work on a 1 or 2 Line Telephone (4 Conductor)