NSI Tork ISR-500 Inline Splicer/Reducer, Insulated, 4 AWG - 500 MCM, Black

Insulated Cable Connector Block for 2-Wires and In-Line Splicers/Reducers, 600V, Connections: Opposite Sides, Number of Ports: 2, Wire Range: 4 AWG - 500 MCM, UV Rated, Abrasion and Chemical Resistant. Dual Rated for use with Copper and/or Aluminum Conductors.