Use this die in the Pres-N-Snap Installation Tool to set gypsy studs or what is sometimes called the double stud. When using this Gypsy Stud Die with the Pres-N-Snap tool, you no longer need to worry about applying too much pressure on the Gypsy Stud, which can damage the ridge on the snap and make it difficult to work properly or not at all. This Gypsy Stud Die has a special raised post in the center that prevents any damage to the snap when installing. This die is a must for those installing the Gypsy Stud or Double stud snap.