Full Technical Description: In Line Type; 4.01 Inch L X 1.06 Inch W X 2.03 Inch H Size; 6 AWG Solid min. Conductor Size; 250 MCM Max. Conductor Size; Aluminum/Copper Conductor Material; UL, CSA Approval; Aluminum Alloy Body Material; Non Insulated Insulation Type; 2 Screw(S); IISR Model