ILSCO Power Distribution Block, Mechanical connection, Dual Rated, Aluminum material, Tin plated connector,2 mounting hole(s), mounting bolt/stud size #10 in, UL 1059 Recognized, C22.2 No. 65-03, Copper/Aluminum Primary Conductor 2/0 Str - 14 Str and 10 Sol - 14 Sol, Copper/Aluminum Secondary Conductor 10 Sol - 14 Sol and 2/0 Str - 14 Str, 2 conductors, Drive Type Main 5/16 Internal Hex, Drive Type Tap 5/16 Internal Hex, rated for 600 V, primary color Black, 3 poles, 1 ports per pole primary, 1 ports per pole secondary,