Yellow mid-line quick splice connectors for 12-10 gauge wire. Quick splices are a fast and easy way to splice into an existing wire. No stripping of the wires is necessary. Simply insert both wires into the splice, fold the top with the metal insert over the wires and squeeze down with pliers until the cap clicks into place. The metal insert in the connector is designed to cut through the insulation and make the connection between the two wires.