Milwaukee Hole Dozer Bi-Metal Hole Saw Set 7pc (48229001)

Modern technology for maximum productivity.
Tooth design - 3.5 teeth per inch with a positive 10° tooth angle provides the following advantages: - faster and more aggressive cutting, - improved heat dissipation during cutting, resulting in longer-lasting sharp teeth, - deeper gullets ensure more effective chip removal, preventing chip buildup and heat formation, - the special tooth angle has a lower tendency to catch on thinner materials, - the teeth are alternately set to minimize friction and binding, - requires less feed pressure, achieved by combining aggressive tooth geometry and good chip evacuation, resulting in less force required during cutting.
Tooth material - Matrix II high-quality high-speed steel is used for the tooth zone of the saw blade. 
Saw blade body - The 1.27 mm thick steel saw blade body is rigid to maintain shape and flexible. - The effective cutting depth is 41 mm.
Back plate design - The back plates are made of thick steel, preventing the slots from widening over time. The thick back sections increase strength and rigidity, minimizing vibrations. 4 drive pin holes facilitate the placement of the arbor.
Diagonal slots facilitate the insertion and removal of the arbor.