The Deka 00337 is a set of heavy duty jumper cables built for the thing cheap sets fail at: putting enough current into a dead battery to turn the engine over on the first try. Sixteen feet of 4 gauge wire, 100% copper conductor, color-coded clamps on both ends. If you keep a set in the trunk or behind the seat of a work truck, this is the grade you want it to be. Why 4 Gauge and 16 Feet Both Matter Gauge and length work against each other. Thinner wire adds resistance and so does a longer run, and resistance is current that never reaches the dead battery. Plenty of bargain booster cables are sixteen feet of 8 or 10 gauge, which looks the same coiled up in the box and delivers a fraction of the amperage. Four gauge is heavy enough wire to cover that distance without choking the flow. The conductor matters just as much. These are 100% copper, not copper-clad aluminum. Aluminum has higher resistance and gets brittle where the strands flex, which is why clad sets tend to fail near the clamp after a couple of winters. The jacket on this set also stays pliable in the cold. That's a real consideration in Northeast Ohio, where the mornings you actually need jumper cables are the ones in the teens, and a stiff set fights you the whole time. Fits Top Post, Side Post, and Remote Terminals The 600P clamps are color-coded for polarity, so there's no guessing which end is positive, and the jaws are shaped to bite onto top post, side post, and remote jump terminals, including the tucked-away setups on late-model cars and trucks where a lighter clamp can't get a grip. Four gauge covers cars, light trucks, vans, and most gasoline engines comfortably. If you're jumping a large diesel, a dual-battery work truck, or heavy equipment, step up to a 2 or 1/0 gauge set instead. Call us with what you're starting and we'll tell you which one you actually need. Key Features 4 gauge, 100% copper conductor: full current delivery, not copper-clad aluminum 16 foot length reaches nose-to-nose or alongside without repositioning the dead vehicle 600P clamps grip top post, side post, and remote jump terminals Black and white cables, color-coded for fast polarity identification Jacket stays flexible in cold weather Packed in the Deka retail box, sized to live in a trunk or toolbox Specifications Manufacturer Deka (East Penn) Part Number 00337 Cable Gauge 4 AWG Length 16 ft Conductor 100% copper Clamps 600P, color-coded Cable Colors Black and white Packaging Deka retail box Local Pickup in Northeast Ohio Grab a set at our Willoughby counter. We've been handing jumper cables across it to drivers from Wickliffe, Eastlake, Mentor, and Euclid for years. If you're not sure 4 gauge is enough for what you're starting, call first and we'll sort it out before you drive over.