Cover Buttons - 1/2" (SIZE 20) - FLAT BACKS - QTY 100 COVER BUTTONS - SIZE 20 (1/2" - 12mm) - FLAT BACKS 100 SETS (SHELL AND FLAT BACKS) TOOL IS NOT INCLUDED, BUT IS REQUIRED IN ORDER TO ASSEMBLE COVER BUTTONS SEE OUR OTHER LISTINGS FOR ASSEMBLY TOOL WE WILL ALSO INCLUDE A PAPER TEMPLATE