Cover Buttons - 1/2" (SIZE 20) ASSEMBLY TOOL COVER BUTTONS ASSEMBLY TOOL - SIZE 20 (1/2 This is for 1 (one) covered button assembly tool (mold and pusher) used especially with the aluminum buttons sold in my store THE ASSEMBLY TOOL IS NECESSARY TO ASSEMBLE YOUR FABRIC COVERED BUTTONS AND EACH SIZE BUTTON REQUIRES A DIFFERENT SIZE TOOL MADE USA