I usually drill out the centers as much as possible before using the tool. I also use heat, since paint is easier to apply than drilling out broken tool steel. I am a distant relative of Mr. Brute-wrench, but I am also learning to only tighten things 1/4 turn before they break. My wrenches keep getting shorter when the industry is making them longer. My 1/4" drive set is one of my favorites. I rarely use the 1/2" drive ratchet and since I sold the bulldozer, I haven't use the 3/4" drive ratchets. I was told about a new bolt rust buster by Zep, but haven't tried it yet. Don't know what the product name is either. Anyone here familiar with this?