Premium Cork Borer Set of 10 is made of Heavy Duty Nickel Plated Steel steel tubing with attached handles including a steel punch rod.

This set of 10 cork borers allows you to cut holes in cork like a pro. Includes 10 borers, 3/16-in. to 3/4-in. in diameter, nested for easy storage. Borer size is stamped on the collar of each instrument.  Complete set includes steel punch for removing debris from the punches.  Create uniform holes in rubbers stoppers and corks to meet a variety of laboratory needs. The standard holes in rubber stoppers are 3mm or 5mm depending on the stopper size. Often a larger hole is needed to attach glass tubing, thermometers, funnels, glassware, or other equipment. This set of 10 heavy duty nickel plated steel cork borers ensures you can always make the right size hole when you need it. You can also make your own holes in economical corks instead of pre-drilled rubber stoppers or just keep a few solid rubber stoppers on hand instead of pre-drilled stoppers in every size.