The strong, high performance triple chip Tungsten Carbide Tipped hole saw provides long life when cutting difficult and abrasive materials, such as wood and PVC. It offers a cost effective solution for cutting through nail embedded wood, or virtually any wood and metal combination, reinforced concrete and fibreglass. Leaves high quality surface finish on entry and exit and provides a smooth cut when cutting traditional lathe and plaster. Tungsten Carbide Tipped teeth for outstanding cutting performance and product durability. Will cut nail embedded wood or virtually and wood and metal combination, such as wooden doors with metal fascia panels. Cutting depth of 41mm (1.5/8""). Suitable for use in mains and battery-operated tools.Teeth per Inch (25mm): 3Teeth Type: Tungsten Carbide TippedCountry of Origin: CN Specifications Diameter metric: 25mm Diameter imperial: 1)" Cutting Depth metric: 41mm Cutting Depth imperial: 1,5/8" Thread Size: 1/2 - 20