THE DREMEL EZ LOCK MAKES ACCESSORY CHANGES EASY AS PULL - TWIST - RELEASE. THE ONE-PIECE MANDREL DESIGN SIMPLIFIES THE PROCESS OF CHANGING ACCESSORIES AND MAKES IT EASY TO THROUGH A RANGE OF MATERIALS FROM METAL TO PLASTIC. THE EZ402 MANDREL IS FOR USE WITH EXCLUSIVE EZ LOCK ACCESSORIES. FEATURES UL STYLE""MARGIN-TOP0PX;PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" FIRST PATENTED SYSTEM OF ITS KIND ONE-PIECE MANDREL DESIGN ELIMINATES THE NEED FOR SCREW COMPATIBLE WITH ALL DREMEL ROTARY TOOLS PROFESSIONAL'S CHOICE