Material: High current 3/8inch thru panel battery terminal connectors are made of high-quality copper and insulating plastic, with high stability and durability Insulation Characteristics: Compared with other connectors, the fixed wall made of insulating material is used to prevent metal fixation from electric spark and fire Compatible Model: The battery terminal connector is used for the connector from the car battery to the outside of the car or the internal structure of the car, which can be used for trucks, cars, SUVs, ships, etc Color: Black & Red Material: copper Package Contents: 2x Battery Terminal Connectors Only the above package content, other products are not included. Note: Light reflection 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.