Polaris IPLDS600-8 Black Stacked Dual-Side Entry Insulated Multi-Tap Connector, 8-Port, 600 MCM-6 AWG
https://nsiindustries.us.com/product/8-port-black-stacked-pre-insulated-connector-600-mcm-6-awg/
Polaris Black Stacked 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.