Nimbus4Flex Insulated Flexible Multi-Tap Connector, Dual Sided Entry, Mechanical connection, Dual Rated, Aluminum material, Tin plated connector, UL 486A/B Listed, C22.2 No. 65-03, Copper/Aluminum Primary Conductor 600 kcmil - 4 Str, Contains DE-OX®, 4 conductors, 4 ports/wireways, Plastisol insulation, Drive Type Main 3/8 Internal Hex, flex conductor range 350-4 H,I,K 4/0-4 M 373.7-4 DLO, rated for 600 V, primary color Black, 1 poles,