The multi purpose accessory set includes 100 high quality original dremel accessories including ez speedclic accessories for quick and easy accessory change with this accessory set you can handle a variety of applications in a variety of materials in the carrying case you can comfortably store your dremel accessories comfortably includes 1x drill bit 1x mandrel length 390 mm maximum speed 35 000 rpm 1x mandrel length 350 mm maximum speed 35 000 rpm 1x ez speedclic mandrel le