150 Sets KAMsnaps Round Butterfly Flower Shape Size 20 KAM Snaps Resin Plastic Buttons No-Sew Fasteners KAM snaps are industrial quality and comply with CPSIA regulations for children's products. Size 20 standard length snaps. Cap diameter approx 1/2". These snaps are NOT intended for thick/dense material like double layers of vinyl (which require size 20 EXTRA LONG snaps). Snaps may fall off if they are too short for your material. 150 sets of KAM plastic snaps. 1 set = 1 butterfly or flower cap, 1 round cap, 1 socket, 1 stud. Requires KAM snaps pliers to install (NOT included). Snaps are machine washable and dryable.