Set includes 6 different sized cork borers and one ram rod. Borers neatly fit into each other for easy and convenient storage. Can be used for a variety of functions including punching holes on an agar plate in microbiology, taking samples from living trees for tree ring analysis and for cutting holes in both rubber stoppers and corks prior to inserting glass tubing. Diameters of borers: 4mm, 6mm, 7.5mm, 9.5mm, 10.5mm and 12mm.
Cork borers are made of high quality, sharpened nickel-plated brass tubing with attached plastic handles. Ram rod is made of high quality steel. Designed for use in a laboratory or educational setting, but also great for various functions around the house in crafting and home improvement projects.