Surecrimp Aluminum Compression Lug, Dual Rated, Aluminum material, Tin plated connector,Long barrel, standard tang, 2 mounting hole(s), mounting bolt/stud size 1/2 in, mounting hole spacing 1.75 in., UL 486A/B Listed, C22.2 No. 65-03, 180° connecting angle, Copper/Aluminum Primary Conductor 500 kcmil, Contains DE-OX®, no sight window, Square tang end, rated for 35 kV, die color code Pink, primary color Silver, die index 300,