Surecrimp Copper Compression Lug, Copper material, Tin plated connector,Long barrel, narrow tang, 1 mounting hole(s), mounting bolt/stud size 3/8 in, UL 486A/B Listed, C22.2 No. 65-03, 90. connecting angle, Copper Primary Conductor 500 kcmil, Contains DE-OX®, no sight window, Square tang end, flex conductor range 350 G,H,I,K,M 373.7 DLO, rated for 35 kV, die color code Brown, primary color Silver, die index I-87,