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. Here is a good tutorial about installing them, by Noodlehead, the maker of the Super Tote.
Measures: 18mm (3/4")
*Do not worry about the blue in the images. That is a protective film, keeping your snaps all shiny and smooth!*