Heavy-duty battery eyelet connectors for automotive, powersport, marine, RV, and truck applications.Hard-mount the eyelets for quick and convenient charging or jump starting. Lie-flat design for seamless installations with M6 (1/4-inch) hole size. Charger adapter included for quick and easy transitions between your Boost jump starter and Genius charger. Made from durable, heat stabilized 8AWG silicone wire that maintains its flexibility in cold weather environments.Designed to efficiently transfer maximum current flow with minimal power loss. Compatible with Boost UltraSafe Lithium Jump Starter models: GB20, GB40, GB50, and GBX45. Attach the adapter for compatibility with Genius Charger models: GENIUS1, GENIUS2, GENIUS5, GENIUS10, GENIUS2x2, GENIUS2x4, and previous G Series models: G750, G1100, G3500, G7200.