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 a diameter of 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 running and a longer service life. 2 to 10 times longer service life than conventional bi-metal hole saws.
