Visible Set Screws

• 1). Look on the inside top of the hole saw for two small set screws. The set screws secure the hole saw to sleeves on the arbor.
  
  
• 2). Insert an appropriate size Allen wrench into the head of the set screws and turn the screws counterclockwise to remove the screws from the arbor.
  
  
• 3). Twist the hole saw counterclockwise to unthread the hole saw from the arbor.
  
  

No Visible Set Screws

• 1). Pull back on the arbor base above the top of the hole saw with your fingers, if you have no visible set screw. (This is the Lenox Snap-Back design; instead of set screws, two studs keep the saw from shifting.)
  
  
• 2). Twist the hole saw counterclockwise to unthread the saw from the arbor while you have the arbor base pulled back.
  
  
• 3). Release the spring loaded arbor base when you remove the hole saw from the arbor.