The Everstart J-Hook Battery Bolts secure your battery in place and keep it from rattling or moving. These hooks are made of tempered steel and come with washers nuts and steel bolts. Use this product with a battery frame and hold-down to secure your 6-12-volt battery. These hooks are 10-inches long and incredibly durable for a reliable performance. Coleman Cable Inc. is a leading manufacturer and innovator of electrical and electronic wire and cable products for the security sound telecommunications electrical construction retail commercial industrial irrigation HVAC and automotive markets. Coleman Cable Inc. offers a family of leading brands such as Designers Edge Fire Shield and Woods.