Superiority:The teeth of our Bi metal HoleSaw are Curved,this design can guarantee for longer life and improve durability.This is the main superiority of our Bi metal HoleSaw compared others.

• M3 bi metal construction for heavy duty cutting
• Can be used in portable electric or pneumatic tools, verticaldrillmachines, and other machine tools.
  
• For heavy duty cutting in stainless steel , pipes, aluminum, cuprum, hardwood, plywoodand and plastics.
  
• Diameters from 9/16"(14mm) to 8-17/64"(210mm)
  
• Sharper Tooth Geometry cuts material faster for faster drilling.
• Increased high speed steel height (highest in the industry) improves hole saw durability      
• Open eyelets provide for easier removal of cut materials and increased visibility while cutting