PACKAGE INCLUDE --- the set contain 2 battery terminal connectors, 2 anti-corrosion washer. QUICK RELEASE --- The battery designed with quick release(disconnect) function, easy to use, The battery connectors can be released/disconnect (un-crimp the battery post) by toggling the tensioner. EASY-TO-USE DESIGN --- Design with simple screw nuts, easy to install, you could fix and scure the wire end(lug) without tool, hand tighten the nut to clamp the wire end, quickly secures and unfastens wire end. HIGH QUALITY --- Made of high quality Brass, provides high conductivity and low resistance for maximum current flow. For increased strength and reduced corrosion, ensure not corrode and rust. More resilient than iron and lead, won't crack, sturdy and durable for safe use. VARIOUS USE --- Widely used for car, boat, truck, RV vehicles and electrical equipment which have a standard top post battery. Used for battery extension, parallel connection, and ground connection. KeeRoarin is an Auto parts brand, that provides quality auto parts for auto Maintainance. We want to be your reliable partner, Backing up your driving.