Thesehemline 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 included in this pack each 13mm in size they will be easy to sew into your designs and are made of rust proof brass ensuring long lasting quality the hemline range brings a huge variety of essential sewing to