Cork Borer set of 12, saw shape type, designed for boring holes in cork or rubber stoppers. Manufactured from brass nickel plated.  The sets come complete with push rod for clearing borers.

Outside bore sizes: 18.25mm, 16.4mm, 14.2mm, 13.8mm, 12mm,10.7mm, 9.3mm, 7.6mm, 5.5mm, 5.2mm, 4.9mm, 3.5mm