DEWALT Hole Saw Mandrel, Quick Change, 1-1/4-Inch to 6-Inch Diameter, 7/16-Inch Shank (DW1803)
DEWALT's Heavy-Duty 3/8-Inch Shank Quick Change Mandrel features a spring-loaded collar that automatically engages drive pins, a patented Pilot Point tip that allows for faster penetration of materials, and double-set screws with a recessed combination head making it easy to quickly change centering bits.