20mm, 17mm No-Sew Jean Tack Buttons WJI Combo CT. 6 Buttons Please Click on 'by JBDIYME' link at the top of the page to view more buttons. This package contains 6 buttons (3 17mm + 3 20 mm) All you need is a hammer for quick and easy button installation. How-to install instructions included. Ship from MA 01760 Dimecrafts&reg; is a registered trademark.