Thesehemline plastic snap fastenersalso called snap popper and press stud are a pair of interlocking discs commonly used in place of buttons to fasten clothing these are a great alternative to buttons and zips and can be used to fasten shirts bags and other garments with easethere are six sets included in this pack all of which are 15mm they will be easy to sew into your designs and are made of clear plasticthe hemline range brings a huge variety of essential sewing tools and accessorie