Elecopto Cork Borer brass (Set of 6) Brass Double Lever Corkscrew  (Pack of 6)

This set of six cork borers allows you to make uniform holes in rubber stoppers and corks to meet a variety of laboratory needs. The standard holes in rubber stoppers are 3 mm or 5 mm depending on the stopper size. Often a larger hole is needed to attach glass tubing, thermometers, funnels, glassware, or other equipment. This set of six nickel-plated iron 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.