The Jonard Tools RJ11 Pass-Through Connectors are used by network installers/technicians in order to terminate telephone cables with a pass-through crimper. They are used in households and businesses and are ideal for terminating flat or round telephone cable or even replacing an existing connector (CAT3 or other similar). These connectors feature the following: 50 ?in gold plating on contact surfaces provides greater signal quality than the competition Standard two point prongs allow you to use stranded or solid CAT3 cables Simplify twisted pair network cable termination by allowing the wires to pass through the connector Pass-through feature removes the need to measure and cut wires before termination, leading to better connections and reducing signal loss Clear housing allows the operator to see the wire pairs easily Comes packaged in a jar for convenient storage This product comes in a jar of 100 connectors.