I used a 3/4" to 1/2" adapter but not with a percussion gun. I had trouble getting the wheels off the truck due to the lug nuts getting stuck on the wheels. So I broke the 3/4 inch drive which is a 40 inch long breaker. It takes 1850 pounds of torque to break the breaker. The adapter lasted up to the seventh nut before breaking. If you ask me what I think of adapters. they are great for the price. I knew there was a good chance it would break. This went on for a long time, under what torque was the small adapter. I will buy this set again if I need another adapter of the same size again.