
This is a good value for money set. It can be used in different scenarios. The best way to generalize this is to think of a nut or bolt that cannot be removed in the normal way. As long as the item is not snapped in place, meaning it is flush with the object it is attached to, and the bolt or nut is sticking out far enough to grab the extractor bushing, you should be able to remove it with this kit. Finally, when you try to use these pullers, sometimes the item is so tight or the angle isn't in a good leverage position that you can't loosen it with your hands. This is where the "percussive" part of this tool comes into play! These pullers can be used with power tools that can generate tremendous amounts of torque to pick a sealed lock. All in all this is a great set for your toolbox, believe me you will need it sometime in the future!