The tools are made of nickel-plated brass for durability and corrosion resistance, and the set includes a tool used to clean cork from the boring tubes.

The is a 6-piece hole-boring tool set for use with cork, with 5 bore sizes that range from 5 to 13mm. 

Other different piece set for your options:

Different  piece nickel plated, stopper borer set with individually numbered handles. 

Also included is a plug removal rod.

OD are about : 2mm 6mm 8mm 10mm12mm 15mm 18mm.

set of 4/6/9/12, plastic handle                                                       

set of 4/6/7/9/12,  nickel-plated brass handle

set of 7/10, nickel-plated steel handle     

Product features

Hole-boring tool set for use with cork

Bore sizes range from 5 to 13mm

Made of nickel-plated brass for durability and corrosion resistance

Includes tool for pushing cork out of boring tubes