The DeWalt DW1803 is a 7/16 Quick Change Mandrel which fits hole saws from 1-1/4 to 6. It offers spring-loaded collar that automatically engages drive pins to prevent hole saws from locking to the mandrel. It features double set screws with a recessed combination head for quick and easy centering bit changes. It utilizes hardened steel construction and has been tested through 15000 cycles to deliver jobsite durability.
Best Price: 16.99 USD at Tool King