You will love these new heatresistant nylon snaps 516" 8mm. that you can use with confidence. They can be safely ironed over by most home irons and ironing presses up to the cotton setting. Please be sure to test the snaps to your satisfaction, as they have real positive snap action they stay closed. They can be washed, drycleaned, and are rustproof. 18ct per package. 6 packages per box. Purchase by the box.