Schumacher 71303 Booster Cable Pressure-crimped connections for low resistance and best performance Contoured, copper-plated jaws use with top- or side-terminal batteries for best conductivity and power transfer Terminal-biting clamp design with a heavy-duty spring for vise-like hold and vinyl coating that protects against rust and corrosion 16' side to side hook-up provides accessibility in challenging engine-starting situations Copper-clad aluminum cable is color-coded for easy polarity identification