UTILCO Spade Type Transformer Lug, Heavy Duty, Mechanical connection, Dual Rated, Aluminum alloy 6061-T6 material, Clear plated connector,12 mounting hole(s), mounting bolt/stud size 9/16 in, mounting hole spacing 1.75 in., Copper/Aluminum Primary Conductor 750 kcmil - 1/0 Str, 8 conductors, Drive Type Main 5/16 Internal Hex, rated for 600 V, primary color Silver,