RapidRun Coupling rings by Cables To Go are provided with every PC/Video (yellow) and Multimedia (blue) RapidRun Runner cable for connecting the Break-Away termination. This replacement 2-pack is perfect when rings are lost or misplaced. After installation, remove the pulling cap from the Runner Cable and attach the Coupling Ring to the Runner Cable. Each end of the Coupling Ring has different threads. The knurled end will face away from the cable.