The boring needle which we developed can make big or small holes. At the moment, the needle size we advise to use is 1.4mm.  Other sizes are available. Normally, you can fix boring needles on the first or the last needle of each head. Previously, we used to sell Borer knife. If you compare Borer knife and Boring needle, Boring needle is much easier to use. Because in case of the Borer knife, you need to do a special 12.1mm shifted punching.