I have been using gear wrenches for quite some time. For the price of their heads and ratchets plus wrenches. You can't go wrong. I literally own almost every ratchet, socket, wrench, and ratchet wrench that a gear wrench sells. I use their tools every day as a full time mechanic. I work on everything from semi-trailers to small tractors. If you do something stupid like put a 3 foot cheat pipe on it then yes you will probably break it. GHOST. I can snap a half inch 24 inch bar with it all day. Take care of them and they will give you pleasure for a long time. 120 xps is ideal for engine and transmission work. After heavy use, they begin to lose their delicacy. The 84 teeth are really strong and still pretty good. I bought my first 120xp set three years ago and still use it in the store every day.