The basics Dritz Magnetic Snap. The benefits These magnetic snaps are a great addition to pockets in purses, totes, backpacks and even try using them on straps for books, albums, boxes and much more.  The uses Use to secure openings on apparel, purses, totes and craft projects. The bottom line This package contains two sets of 3/4in/18mm snaps. Gold or Nickel finish.