My brother builds race engines & last weekend had a bit of a mishap with an engine lift breaking removing a GM 454 engine. He borrowed this one in the pic that was the same as his to bring me to make a template for a much heavier one. This one is made from 3/16" & interrupted welds on both sides. He asked me to make (2) & just have only one hole since he never needed or used the other additional holes & he wanted them welded all the way around. I found a piece of 5/16" plate & plasma cut the plates after making a 1/8" template for the hole pattern(GM engines) & making further units. Here's some pics.