Superiority of our bi metal Hole Saw: the teeth of our bi metal hole saws are Curved,this design can guarantee for longer life.

• M3 bi metal construction for heavy duty cutting
• Can be used in portable electric or pneumatic tools, vertical drill machines, and other machine tools.
• For heavy duty cutting in stainless steel , pipes, aluminum, cuprum, hardwood, plywoodand and plastics.
• Curved teeth design to strengthen each tooth for longer life and improved durability.
• 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
• Extra charge for the pilot and arbor

Dimensions	14mm-210mm(9/16" to 8-17/64")
Regular teeth	4/6 TPI
Cutting depth	38mm
HRC	63-65°
Thickness	1.27mm