Boekel offers three different cork borer sets, two brass and one steel for boring corks and stoppers. Each borer comes with strong permanent handles that will not break under high torque, ensuring user safety. Starting at 3/16" diameter, the tubes telescope and increase gradually in size along with numbers marked on their shank. Nickel plated stainless steel borer takes and holds a sharper cutting edge than the brass borer. Each set comes with a steel punch. For sharpener, see Cat.No. 13-1602.