Cover Buttons - 1/2" (SIZE 20) - WIRE BACKS - QTY 25 SIZE 20 (1/2" - 12mm) COVER BUTTONS 25 SETS (SHELL AND WIRE 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