DeWALT DW1803 Quick-Change Hole Saw Mandrel, 7/16 in Shank, Steel

With a tool-free, quick-release collar to helps to prevent locking, DeWALT quick-change hole saw mandrels feature double-set screws with a recessed combination head for quick, easy centering bit changes. Tested through 15,000 cycles to ensure extreme jobsite durability, each features the patented DeWALT pilot-point tip for fast material penetration.