I've edited this review because I was thinking of another terminal I bought. These 4awg terminals are pretty well made. The 1/4" and 5/16" stud versions are made from different size blanks and have a substantial amount of material around the stud hole. The attached pic (terminals end to end vertically) are the 4awg terminals.The 8AWG version of the 1/4" stud has VERY thin margins around the stamped hole. The nut will over hang the sides of the terminal pad. The attached pic of the terminals side by side compare the 4awg-1/4" and the 8awg-1/4".