6-Port Black Multi-Tap Pre-Insulated Connector, 500 MCM – 4 AWG
https://nsiindustries.com/product/6-port-black-multi-tap-pre-insulated-connector-500-mcm-4-awg/
Polaris Black Multi-Tap Connectors form secure connections between multiple conductors with a rounded design and UV-resistant insulation coating. Installs with a hex key and torque wrench, with no need for cover and taping.