4-Port Uninsulated Multi-Tap Connector, 1/0 – 14 AWG
https://hotfix.nsiindustries.com/product/4-port-uninsulated-multi-tap-connector-1-0-14-awg/
Polaris Uninsulated Multi-Tap Connectors form secure connections between multiple conductors with an efficient aluminum body plated for corrosion resistance. Installs with a hex key and torque wrench, with no need for cover and taping.