Tool-less Plastic Snap Fasteners - Finger Snap - Allowable fabric thickness for Installation: 0.8 - 1.6 mm (0.03 - 0.06 in) - English instructions: Available - Usage: Miscellaneous goods such as bag openings and coin case fasteners. - It is easy to install without any press tools. - Finger Snap can be easily installed by snapping them on by hand.