Use to make easily-accessible battery connections, inside or outside the vehicle. Product Features:Can be used individually or in pairs. Easy to install. Solid brass posts. Includes brass hexnut and lockwasher. Jumper terminals have contact post 13/16 (20.6mm) diameter, 1 1/8 (28.8mm) long, which is grooved to accept standard jumper cables 6 -48V DC. Replacement red cap: 97846-A