"I had the devil's own job getting this to fit over the copper rod that I'd part buried, despite filing off any burrs at the top of the rod. It's a very tight fit, but electrically that's excellent. I also applied too much torque to the brass nut and bolt and the bolt sheared - clumsy me. The bolt would probably be OK as long as care is taken not to over tighten. Easy enough to obtain a new bolt, but inconvenient."