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

• Can be used in portable electric or pneumatic tools, vertical drillmachines, and other machine tools.
  
• For heavyduty cutting in stainless steel, pipes, aluminum, cuprum, hardwood, plywoodand, plastics.
• The set includes 3/4"(19mm), 25/32"(20mm), 7/8"(22mm), 1"(25mm), 1-1/8"(29mm), 1-1/4"(32mm), 1-3/8"(35mm), 1-1/2"(38mm), 1-3/4"(44mm), 2"(51mm), 2-1/4"(57mm),2-5/8"(67mm),3"(76mm)Bi-Metal Hole Saws, 2PC Matching Arbor and 1PC Matching Extension bar
• 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.