SafeGuard booster cables are an auto-polarity set of cables that feature a built in brain that automatically detects which clamps are connected to the positive posts and which clamps are connected to the negative posts. There is no need to be concerned if you are connecting the correct clamps to the correct terminals. SafeGuard booster cables are also equipped with Cinch-Lock clamps to make this set of booster cables the safest and easiest to use. Juice Power Booster Cables now offer an Extreme Weather alternative in all five of the Performance Booster Cables.