Morris Products 21762 Non-Metallic Cable Connector, Lock Wedge Style, 1/2" Size (Pack of 50) Non-Metallic Romex Cable Connectors - Lock Wedge Style - Non-Metallic Lock Wedge Connectors for cable. Non-Metallic Romex Cable Connectors - Lock Wedge Style - Non-Metallic Lock Wedge Connectors for cable. Non-Metallic Romex Cable Connectors features include: Push-in design with a Captive Lock Wedge that secures cable with a single squeeze with pliers