Material: Plastic Type: (ON/OFF) with 500 Amps Maximum Rating: 500 Amps at 12V DC Size(L*W*H): 7.2cm x 5.5cm x 8.5cm / 2.8inch x 2.2inch x 3.3inch Extends Battery Life Universal 12V Applications Prevents Main Battery Drain Black Phenolic Plastic, Heat Resistant Pins: 4 Color: Black Package Includes: 6 x 500A 12V Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing thing. The measurement allowed error is +/- 1-3 cm.