The body is made of alloyed steel, and the teeth are laser-welded from bimetallic HSS M3 steel. They are resistant to high temperatures and wear. The progressive tooth design ensures fast and precise drilling as well as very effective chip removal. Ideal for drilling holes for ventilation, sanitary, and water pipes, sewage and wastewater distribution boxes, junction boxes, contact boxes, locks, halogen lighting, etc. Suitable for cutting holes in steel (including stainless steel), cast iron, wood and wood-based materials (such as chipboard, laminate, fiberboard, plywood), aluminum, metals, plastics, acrylic glass, drywall, etc. Includes adapter and required centering drill. Technical specifications: Teeth: HSS M3, Cylinder: alloyed steel, Teeth per inch (TPI): 4-6, Diameter: 70 mm, Cutting depth: 40 mm, Weight: 220 g.