The 150 sets plastic snaps are size 20 ， also call T-5. Size 20 is often use in clothes diapers. 1 set snaps includes 2 Caps 1 stud and 1 socketThey come in 10 packs 10 colors:bright red x 15 setsdark blue x 15 setswhite x 15 setskhaki x 15 setssky blue x 15 setsyellow x 15 setsgreen x 15 sets blue x 15 setspurplish red x 15 setsRed brown x 15 setsUse:Clothing Maintenance & Good Helper for the clothing store.Package:150 sets T5 snap buttons in 10 Colors