ILSCO Power Distribution Block, Mechanical connection, Dual Rated, Aluminum material, Tin plated connector,mounting bolt/stud size #10 in, UL 1059 Recognized, C22.2 No. 65-03, Copper/Aluminum Primary Conductor 400 kcmil - 6 Str, 2/0 Str - 14 Str and 10 Sol - 14 Sol, Copper/Aluminum Secondary Conductor 10 Sol - 16 Sol and 2 Str - 16 Str, 9 conductors, Drive Type Main 5 mm Internal Hex, Drive Type Tap 5 mm Internal Hex, rated for 600 V, primary color Gray, 1 poles, 1 ports per pole primary, 8 ports per pole secondary,