Bi-metal hole saws

Bi-metal hole saws for portable and pillar drilling machines. When working on soft woods, their variable spacing soldered onto a body made of special steel provides an even cut and lower expenditure of energy. A service life that is up to three times longer is achieved by low vibration and little heat development when cutting. High stability and concentric running exactness characterise the exchangeable drill bit. Lateral slots help to remove the core. The hole saws and the shaft are made of two pieces, that is the reason why the assembly and exchange of the hole saw diameters is so easy to handle.
When using pillar drilling machines, use manual feed only.