Monster Grip NXT Stud Removal Tool Bolttech Mannings’ Monster Grip Tools removed twenty 2-1/2″ corroded studs in five hours versus the 100-hour estimate using the old drilling method. Features and Benefits Patented gripping system results in minimal force loss Engineered design directs all the gripping force to the center of the stud, eliminating “side-loading” problems 20x faster bolt removal saves labor costs