OxGord Jumper Cable 4 Gauge x 12Ft - Commercial Grade 500 AMP Non Tangle Battery Booster Starter with Carry Case SIZE: 4 Gauge 12 Feet, 500 Amp CARRY CASE: Includes a CCA (Copper Coated Aluminum) Travel Bag to Prevent Tangling in your trunk DURABLE: Built with dual construction and extra strong-grip copper teeth. These heavy duty jumper cables are constructed of TPR material (Thermoplastic Rubber), providing low temperature resistance (-40 degree Fahrenheit/ -40 degree Celsius). ERGONOMIC DESIGN: Intuitive design making the cables easy to use on the top-post and side- terminal batteries. COLOR CODED: The red and black cords will keep you from accidentally crossing wires.