ROAD POWER medium-duty booster cables feature dual extruded wire to provide the user with easy, tangle-free operation. Cables are manufactured with either a PVC or T-Prene jacket. While both jackets perform well in warm or cold climates, T-Prene provides additional oil, chemical, and water-resistance. Medium-duty booster cables come standard with 200A copper-plated steel clamps. Medium-duty booster cables are available in 8-gauge, 12' length, and packaged in a retail-style format.