Material: Plastic Type: (ON/OFF) Complete with 500 amp Max rating: 500 amps at 12V DC Size(L*W*H): 7.2cm x 5.5cm x 8.5cm/2.8" x 2.2" x 3.3"Material: Plastic Type: (ON/OFF) Complete with 500 amp Max rating: 500 amps at 12V DC Size(L*W*H): 7.2cm x 5.5cm x 8.5cm/2.8" x 2.2" x 3.3" Extends battery life Universal 12V applications Prevents primary battery discharge Water resistant black phenolic plastic Pins: 4 Color: Black Package Include: 1 x 500A 12V Relay Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.