Made of high-quality, cobalt-alloyed bi-metal (HS-Co8) Flexible, laser-welded connection of alloyed spring steel in the blade spine and high-performance high-speed steel in the toothed cutting area Vario toothing with 4 and 6 teeth per inch Solid back cover for smooth running and even, fast cutting Precise holes for inlet boxes, threads, cable and pipe ducts with diameters from 19 to 92 mm Optimal processing of wood, metal, plastic, plasterboard and other materials Specially for processing steel and stainless steel from 1 mm. Note: For metal processing, the use of a high-quality cutting oil is recommended. For aluminum processing: petroleum. The use of cutting oil enables smoother operation and a longer service life. 2 to 10 times longer service life than conventional bi-metal hole saws.
