Description: The main components of the battery pile head is made of copper. Attachment screw and nut are not copper. Suitable for most vehicles Copper material has good conductive performance, good flexibility The pile head will not break, corrosion resistance, can reduce the voltage distortion and the current transmission loss. Corrosion resistance, good conductive performance, wiring is convenient, and the connection is firm. Specification: Color: Yellow Material: Copper Positive electrode inner diameter: Approx 19 mm, Negative electrode diameter: Approx 17 mm; Length: Approx 51mm. Width: Approx 36mm. Package Includes: 2 Piece Replacement Auto Car Battery Terminal Clamp Clips Connector