ITEM NAME:12V Car Way Battery Terminals Heavy Duty Cable Positive Negative Port Description: 100% brand new and high quality! Polished tinned layer, pure copper material is clearly visible. High quality three-terminal battery head. High carbon steel anti-rotation anti-offset screw. Stabilize the current and protect the battery. Fits 6 and 12 volt positive or negative battery plates. Specification: Material: pure copper tin plating Color: Red(+), Black(-) Positive electrode size: 17.5 mm Negative electrode size: 16.5 mm Material thickness: 1.2MM copper plate stamping Total Size: Approx. 55x35x45mm( LxWxH) Package: 2pcs/pair x Battery terminal Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement..Stabilize the current and protect the battery. Positive electrode size: 17.5 mm. Negative electrode size: 16.5 mm. Anyway we will try our best to avoid this kind of thing. Polished tinned layer, pure copper material is clearly visible.