Position and burnish down the new copper donuts on the board. Orient the foil traces properly and trim to length with the knife. Complete the job by inserting the component leads through the donuts, then flowing solder over the donuts and all overlapped trace connections. Copper Donut Refill Set Set contains 308 die-cut 1 ounce adhesive backed copper donuts. Each has an embossed pilot hole to aid centering.
Copper is passivated to retard oxidation and improve solderability.
Red, black, and green binding posts.