Buttons to cover, good for clothing, or craft applications, like tufted pillows. Five packets of 4 sets , 3/4"and one packet of 12 sets of 5/8". All never opened. The Talon brand say "Rust Proof" the J.P.Coats brand says "Rust Resistant". All say "Washable and Dry Cleanable". This is for all the packets.