When you get it seated properly and it has the proper grip, it is much less fuss and a lot quicker than going through the full process of using regular extractors. It is also much better than (most) extraction pliers in terms of necessary clearance.
For that very reason I originally purchased both versions ( minus the, now also available third option, vise grip style) of Engineer screw extraction pliers. However, I found that while the needle nose pliers generally offer a great grip by design, the jaws tend to easily bind/“twist” with torque/force applied so I hadn’t much luck using them for actual screw extraction in confined spaces/ low clearance situations.
The issue with the ScrewIT is, if you need to seat it with a dead blow, that force needs not to be absorbed by the underlying construction. That’s why I said it works best with steel-steel applications. If the screw you’re trying to extract sits in wood, or in a wall plug - too much energy from that needed blow goes everywhere but not where it is needed.
It will not work if too much of the head of the screw/bolt is gone.
It’s one tool in a whole bag of tricks. Not a one-fits-all-solution.
If it works, it gets the job done quick & clean. If it doesn’t, use the next best option.
Kind regards,
Olli