The Dremel EZ Lock makes accessory changes easy as PULL-TWIST-RELEASE. The one-piece mandrel design simplifies the process of changing cutting wheels and makes it easy to cut through metal. For use with the EZ402 EZ Lock Mandrel. -One-piece mandrel design eliminates the need for screw and screwdriver -Effortless locking and loading-no tiny mandrel screw to lose -First patented system of its kind -Compatible with all Dremel rotary tools -Includes EZ409 Thin-Cut, Cutting Wheels (5) Dremel EZ402 EZ Lock Mandrel not included