Cork Borers, Set of 6, 5 mm - 11 mm

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 brass 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.

NOTE: Actual product may vary from the one pictured due to differences in suppliers.

You get cork borers to make the following hole sizes:

• 4.5 mm (13/16") hole diameter
• 5.5 mm (1/4") hole diameter
• 6.5 mm (19/64") hole diameter
• 8 mm (11/32") hole diameter
• 9.5 mm (25-64") hole diameter
• 10 mm (7/16") hole diameter