The ridescent Rainbow kits contain 12 sets. These are great for attaching straps to bags, adding tags to purses and making zipper pull tabs. Perfect for whenever you want to add a little bling! Grab a Rotary Hole Punch to help install. Cap Snap Size • Cap 8mm • Post 6mm • Base 8mm Hardware Included • Double cap rivets Hardware Finishes • Nickel • Gold • Iridescent Rainbow