10-Port Uninsulated Multi-Tap Connector, 500 MCM – 4 AWG
https://nsiindustries.com/product/10-port-uninsulated-multi-tap-connector-500-mcm-4-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. Suitable for use on the line side of the service equipment as per the NEC article 230.46 requirement.