Use to splice telephone wire in basements, attics and outdoor telephone junction boxes so you can add additional phone jacks to a home or building. This connector allows you to connect 2 or 3 wires. Use to splice telephone wire in basements, attics and outdoor telephone junction boxes "IDC" (Insulation displacement contact) connectorTo add additional phone jacks to a home or buildingCrimp connector cap with a standard pliers until it is flush with the connector bodyConnects 2 or 3 wires