100 KAMsnaps Lead Safe Size 16 (7/16 Inch) Open-Ring Cap Gripper Grip Prong Metal Snaps No-Sew Button Fasteners Studs (500 Snaps) 100 complete sets. 1 set = 2 open-ring caps, 1 socket/female, 1 stud/male. Snaps are compliant with CPSC CPSIA standards regarding lead content in children's products. Can be installed with KAM table-top professional presses with corresponding dies or KAMsnaps KX6 multi-functional hand pliers. Can also be installed with hammer method, including with Snap Source setter. No-sew alternative to buttons.