Body in alloy steel, teeth in bimetallic HSS-M3 steel, laser welded. Resistant to high temperatures and friction. Progressive tooth pitch guarantees fast and accurate drilling and very effective chip removal. Ideal for drilling holes for ventilation, sanitary and water pipes, sewage and waste water distribution boxes, junction boxes, contact boxes, locks, halogen lighting, etc. For cutting holes in steel (including stainless steel), cast iron, wood and wood materials (such as chipboard, laminate, fibreboard, plywood), aluminium and metals and plastics, acrylic glass, plasterboard, etc. Adapter and centre drill required. Technical data: Teeth: HSS M3, Cylinder: alloy steel, Number of teeth per inch (TPI): 4-6, Diameter: 76 mm, Depth of cut: 40 mm, Weight: 250 g.