The Swivel Stud Installation Tool eliminates the gunsmith's common practice of "cranking-in" the stud by using a punch inserted in the swivel hole. Instead, this Brownells tool provides an in-line design which allows straight down pressure on the stud. This makes it easy to align the stud precisely in the center of the mounting hole in the stock. In addition, the big, three-flute, round handle makes it easy to get a good grip and plenty of leverage to turn the stud into the stock.