This 16 foot 4 gauge booster cable ensures the highest level of user-safety and assures dependability in the most extreme climate conditions. 250 percent more power than 10 gauge. Red jacket booster cables. 500 amp clamps. Polar-glo. The polar-glo polarity label clamp is ergonomically-designed so that it can be easily handled by everyone as it attaches itself firmly to both top and side post batteries. Simply hold the cable ends in front of the charging cars headlights for 10 seconds to activate the polarity indicators. Ergonomically designed handle. The clamps' triple-polarity indentification includes color-coding, indent stamping, and glow-in-the-dark labels. Extended jaw has grooves which conform to the side post, locking in place. 100 percent copper. Ul listed. In addition, all energized clamp surfaces are shielded to avoid short circuits and all conductive clamp surfaces are recessed to prevent accidental contact. Tprene insulation was chosen for the wire jacketing material because it remains flexible even under the severest temperatures and is oil, chemical, and water resistant. Extra heavy-duty booster cables are made using 4 gauge wire and performs best with any vehicle including cars, trucks, or suvs.
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