Handy tool for setting 12 mm (½ in) garment snaps without a full plier kit. Use it with a hammer and anvil surface to attach the cap and stud or socket cleanly through fabric. It is compact enough to keep in a notions tin for on-the-spot repairs or small projects like babywear, pouches, and accessories. A budget-friendly way to install standard snaps when you only need occasional fastenings or want to test placement before buying full snap pliers.