Road Power 966-8 J Hook Battery Hold down bolts, 2-Pack, Chrome, 8-Inch. Plated tempered steel. Holds down your battery securely. Includes wing nuts and rubber washers. Works with most 6 and 12-volt batteries. Meant for use in combination with battery tray and battery frame/hold-down (not included). The Road Power (R) brand is a registered trademark of Coleman Cable Inc.