4/0 AWG 1/2” 1-Hole Copper Long Lug – Purple – Bell End
https://dev.nsiindustries.com/product/4-0-awg-1-2-1-hole-copper-long-lug-purple-bell-end/
The POLARIS compression design creates a permanent, vibration-resistant connection that you can rely on with low contact resistance. Suitable for a wide range of applications, including power distribution, grounding and data transmission.