Product information:, Teeth HSS CO8, toolless attachment and loosening of the hole saw and centering drill, light removal of the seeds by side slits, transparent lid of the case, to recognize the content when the case is closed, suitcase: robust and rubber coated , content: 11 hole saws: 20/22/25/44/44/51/68 / 76 mm, 1 Power Change adapter for toolless changes of the hole saw, 2 HSS-centering drills , area of application:, for inox, steel, colored metal , Hardwood, chipboard, plastic, acrylic glass, fiber composite materials