ILSCO Power Distribution Block, Mechanical connection, Copper material, Tin plated connector,mounting bolt/stud size #10 in, UL 1059 Recognized, C22.2 No. 65-03, 2 conductors, rated for 600 V, primary color Black, 1/2-13 x 1-7/16 main conductor stud, 1/2-13 x 1-7/16 main conductor stud, 2 poles, 1 ports per pole primary, 1 ports per pole secondary,