Tungsten carbide-tipped holesaw. Drills material up to 25mm thick. For cutting steel, stainless steel, iron, cast iron, aluminium, copper, FRP and plastics. Ideal when working on switch boxes, electrical applications, lighting fixtures, body repairs, trailer frames, ductile pipe, steel fabrications and structural steel. Tungsten carbide teeth provide excellent wear and heat resistance. One-piece construction with no assembly required. Ejector spring for easy removal of waste slug. Safety collar stop prevents over-penetration for safe and fast operation. Replaceable flute ground pilot drill. Can be used in standard portable power tools run on rotation only and any power tool with a range of 300 to 1000rpm. Cutting fluid is recommended to enhance performance and life.