Features: brand new and high quality Connecting the electrical applicances and the car body directly together cathode of the battery with the high-performance enforced ground wire can greatly improve the circumfluence and the top choice to improve the performance of the car electrical appliances. Increase horsepower, increase torque response. Stabilize idling improve engine kick over. Improve engine start-up performance, connected to the starter motor. for Spark plug jump fire increase, power boost, connected around the cylinder for head. Increased power generation and charging efficiency and extended battery life, near the generator. Increased engine combustion efficiency, fuel economy, close to injectors. Headlights increase in brightness and driving is safer, connected near the for tank rack or the for fender. Specifications: Material:Rubber+Metal Size1:Approx.60cm/23.62inches Size2:Approx.80cm/31.49inches Size3:Approx.100cm/39.37inches Package Includes: 5x Ground Wire note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.