4 Awg Cable Lugs are made from 99.9% pure annealed copper, providing a high degree of conductivity for maximum current flow. This particular variant is suitable for use with 4 Gauge Battery Cable & 3/8" (M1 Stud.
https://selterm.com/collection....s/4-awg-bare-copper-
![image](https://omiyou.com/upload/photos/2024/07/cuDr6hUc5q1RSFWwWDND_12_c93c175ed4261a14bfdc2e8e3c2b59b8_image.jpg)