Short Prong Length 100 Sets (400 Pcs) KAMsnaps Lead Tested Size 16 (7/16 Inch) Open-Ring Cap Gripper Grip Prong Metal Snaps No-Sew Button Fasteners Studs Baby Bibs (Silver) 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. NOT COMPATIBLE WITH THE KAM PLIERS SOLD ON AMAZON (which only work with plastic snaps). Can be installed with KAM table-top professional presses with corresponding dies or KAMsnaps KX professional handheld press. Approx 7/16" (10mm) diameter. SHORT prong length. Cap prongs are approx 3mm long, sufficient for thinner sewing fabrics but not intended for use with thick or dense fabrics. Thin or stretchy fabric like knits and jersey must be reinforced with sturdier material around the area of snaps to avoid ripping (this is true with all snaps).