ByAnnie's Tool-Free Snaps are easy to install and don't require any specialized equipment. Install by hand, literally in a snap! Use these Tool-Free Snaps to close pockets, flaps, garments, and more. They keep items secure and provide easy access, snap after snap. Each package comes with four full sets of snaps. The fashion metal caps of ByAnnie's Tool-Free Snaps are available in three metal finishes (Antique Brass, Black Metal, and Nickel). Match them with ByAnnie's other metal hardware for a coordinated look. Underneath the metal finish, the components (socket, stud, and low-profile cap) are made of plastic, keeping weight and thickness to a minimum. Note: Material thickness limitations may apply. Includes (4) fashion metal caps (recommended for the visible/exterior part of project), (4) plastic studs (for forming connection to socket), (4) plastic sockets (for forming connection to stud), (4) low-profile plastic caps (recommended for the non-visible/interior part of project). See ByAnnie's video on their product page for full installation instructions.