Faster accessory change easy as 1?? 2?? 3!Use for cutting metalEZ Lock Cut-off Wheels last 2 times longerCut-off Wheels labeled for quick identificationOne-piece mandrel design with no screw neededProduct DescriptionEz lock?? Mandrel Starter kit?? consists of: EZ lock Mandrel & 5 metal cutoff wheels?? 1 piece Mandrel design simplifies changing accessories?? pull?? twist?? release?? compatible with all DREMEL rotary tools.Amazon.comIf you regularly use cut-off wheels for your crafting and repair jobs?? the Dremel EZ406 EZ Lock Starter Kit is a must-have addition to your home shop or crafting room. By providing faster and easier mandrel-mounted accessory changes without a screwdriver?? this kit helps save you time and effort so you can focus on your projects.