Pack of 10 Replacement Sleeves for Grey Connector, 6 – 14 AWG
https://dev.nsiindustries.com/product/pack-of-10-replacement-sleeves-for-grey-connector-6-14-awg/
Polaris Grey Multi-Tap Connectors form secure connections between multiple fine-stranded wire conductors, with a rounded design and UV-resistant insulation coating. Replacement sleeves available to enable connector reuse.