Burr, Copper, for #12 gauge, (9.1 diam. x 0.9 thick x 3.1 mm hole), 100 pcs
Burrs are solid copper washers used in lieu of roves in boatbuilding to make a peened rivet joint. Insert the correct gauge copper nail and push a burr over the tip, cut off excess nail and set using the ball side of a ball pein hammer. While peining it
