500 KAMsnaps 25-Color Lead-Tested KAM Snaps Plastic Resin Industrial Snaps Size 20 (1/2") Replacement Zipper Repair No-Sew Buttons (500 Sets) 500 complete sets (20 sets x 25 colors). 1 set = 2 caps, 1 socket, 1 stud. Snaps are size 20 (T5), 1/2" cap diameter, standard length prong. Professional quality, tested in compliance with CPSA CPSIA regulations for lead & phthalates in children's products. Installation tool NOT included. Requires KAMsnaps pliers (ASIN B015XDZ666) to install. Snaps are commonly used on clothing, cloth baby diapers, bibs, towels, and other embroidery, craft, sewing and household projects.